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83-88-5

Basic Information
CAS No.: 83-88-5
Name: Riboflavin
Molecular Structure:
Molecular Structure of 83-88-5 (Riboflavin)
Formula: C17H20N4O6
Molecular Weight: 376.37 .
Synonyms: Vitamin B2-Riboflavin(Vitamin B2)USP/BP/EP;VB2 (Riboflavin);(-)-Riboflavin;1-Deoxy-1-(3,4-dihydro-7,8-dimethyl-2,4-dioxobenzo[g]pteridin-10(2H)-yl)-D-ribitol;6,7-Dimethyl-9-ribitylisoalloxazine;Beflavin;Beflavine;Benzo[g]pteridine-2,4(3H,10H)-dione,7,8-dimethyl-10-(D-ribo-2,3,4,5-tetrahydroxypentyl)-;C.I. 50900;C.I. FoodYellow 15;D-Ribitol,1-deoxy-1-(3,4-dihydro-7,8-dimethyl-2,4-dioxobenzo[g]pteridin-10(2H)-yl)-;E101;E 101 (dye);Flavaxin;Flavin BB;Flaxain;Food Yellow 15;Hyre;Lactobene;Lactoflavin;Lactoflavine;NCI 0033298;San Yellow B;Vitaflavine;Vitamin G;Vitamin B2;
EINECS: 201-507-1
Density: 1.65 g/cm3
Melting Point: 290 °C (dec.)(lit.)
Boiling Point: 504.93°C (rough estimate)
Flash Point: 9℃
Solubility: Water solubility: 0.07 g/L (20 °C)
Appearance: Yellow to orange/yellow crystalline powder
Hazard Symbols: F,T
Risk Codes: 11-23/24/25-39/23/24/25
Safety: 24/25
Transport Information:
PSA: 161.56000
LogP: -1.67520
Synthetic route
67-52-7

BARBITURIC ACID

21037-26-3

N-<3,4-dimethyl-6-(phenylazo)phenyl>-D-ribitylamine

83-88-5

riboflavin

Conditions
ConditionsYield
In acetic acid; butan-1-ol for 4h; Heating;74.2%
752-13-6

tetra-O-acetyl riboflavin

83-88-5

riboflavin

Conditions
ConditionsYield
With calcium methylate
With sodium methylate
123-91-1

1,4-dioxane

67-52-7

BARBITURIC ACID

21037-26-3

N-<3,4-dimethyl-6-(phenylazo)phenyl>-D-ribitylamine

64-19-7

acetic acid

83-88-5

riboflavin

67-52-7

BARBITURIC ACID

123128-64-3

1-(2-biphenyl-2-ylazo-4,5-dimethyl-anilino)-D-1-deoxy-ribitol

83-88-5

riboflavin

87-39-8

violuric acid

3051-94-3

3,4-dimethyl-N-ribitylaniline

83-88-5

riboflavin

Conditions
ConditionsYield
With boric acid
With propionic acid
2535-20-8

6,7-dimethyl-8-ribityllumazine

431-03-8

dimethylglyoxal

83-88-5

riboflavin

83959-96-0

4a-Hydroperoxy-7,8-dimethyl-10-((2S,3S,4R)-2,3,4,5-tetrahydroxy-pentyl)-5,10-dihydro-4aH-benzo[g]pteridine-2,4-dione

83-88-5

riboflavin

Conditions
ConditionsYield
In water Rate constant;
132855-95-9

4a-(1-Hydroxy-ethylperoxy)-7,8-dimethyl-10-((2S,3S,4R)-2,3,4,5-tetrahydroxy-pentyl)-5,10-dihydro-4aH-benzo[g]pteridine-2,4-dione

A

19393-68-1

1-hydroxyethylhydroperoxide

B

83-88-5

riboflavin

Conditions
ConditionsYield
In water Rate constant;
132855-96-0

4a-(2-Hydroxy-2-methyl-propylperoxy)-7,8-dimethyl-10-((2S,3S,4R)-2,3,4,5-tetrahydroxy-pentyl)-5,10-dihydro-4aH-benzo[g]pteridine-2,4-dione

A

69515-12-4

peroxy-t-butanol

B

83-88-5

riboflavin

Conditions
ConditionsYield
In water Rate constant;
114590-52-2

lampteroflavin

83-88-5

riboflavin

Conditions
ConditionsYield
With hydrogenchloride at 60℃; for 1.33333h;
71491-00-4

2,5-diamino-6-hydroxy-4-ribitylaminopyrimidine-5'-phosphate

431-03-8

dimethylglyoxal

83-88-5

riboflavin

Conditions
ConditionsYield
1) cell extract of Candida guilliermondii ATCC 9058, phosphatase; 2) riboflavin synthase; Yield given. Multistep reaction;
431-03-8

dimethylglyoxal

71491-00-4

2,5-Diamino-6-ribitylamino-4(3H)-pyrimidinone 5'-phosphate

83-88-5

riboflavin

Conditions
ConditionsYield
With phosphate buffer; 1,4-dithio-erythritol; pyrimidine deaminase; riboflavin synthase; magnesium chloride; alkaline phosphatase 1.) 1 h, 37 deg C, 2.) 3 h, 37 deg C; Yield given. Multistep reaction;
83-88-5

riboflavin

Conditions
ConditionsYield
With HEPES buffer; Hg(II)*EDTA In water at 30℃; Rate constant; at pH 7.4;
With C12H13O2(CH3)3(O)(OO) In acetonitrile at 37℃; for 0.166667h; pH=7.4; aq. phosphate buffer; Inert atmosphere;100 %Spectr.
With Lactococcus lactis dihydroorotate dehydrogenase; oxygen Kinetics; Reagent/catalyst; Enzymatic reaction;
61066-33-9, 61066-34-0, 61066-35-1, 61127-23-9

pyrimidine-2,4,5,6(1H,3H)-tetraone

1-<2-amino-4,5-dimethyl-anilino>-D-1-deoxy-ribitol

1-<2-amino-4,5-dimethyl-anilino>-D-1-deoxy-ribitol

83-88-5

riboflavin

Conditions
ConditionsYield
With boric acid; acetic acid
With ethanol; tin(ll) chloride
With ethanol; hydrogen sulfide
With boric acid; acetic acid
699-40-1

5,5-Dichloro-barbituric acid

1-<2-amino-4,5-dimethyl-anilino>-D-1-deoxy-ribitol

1-<2-amino-4,5-dimethyl-anilino>-D-1-deoxy-ribitol

83-88-5

riboflavin

Conditions
ConditionsYield
With pyridine
511-67-1

5,5-dibromobarbituric acid

1-<2-amino-4,5-dimethyl-anilino>-D-1-deoxy-ribitol

1-<2-amino-4,5-dimethyl-anilino>-D-1-deoxy-ribitol

83-88-5

riboflavin

Conditions
ConditionsYield
With acetic acid
21037-26-3

N-<3,4-dimethyl-6-(phenylazo)phenyl>-D-ribitylamine

5,5'-dihydroxy-<5,5'>bipyrimidinyl-2,4,6,2',4',6'-hexaone

5,5'-dihydroxy-<5,5'>bipyrimidinyl-2,4,6,2',4',6'-hexaone

83-88-5

riboflavin

Conditions
ConditionsYield
With hydrogenchloride; palladium on activated charcoal; nitrogen anschliessenden Einwirken von Luft auf die Reaktionsloesung;
<4,5-dimethyl-2-D-ribitol-1-ylamino-phenyl>-carbamic acid ethyl ester

<4,5-dimethyl-2-D-ribitol-1-ylamino-phenyl>-carbamic acid ethyl ester

83-88-5

riboflavin

Conditions
ConditionsYield
With sodium hydroxide Erwaermen des Reaktionsprodukts mit Alloxan in wss. HCl bzw. in Essigsaeure unter Zusatz von Natriumacetat und H3BO3;
With potassium hydroxide Erwaermen des Reaktionsprodukts mit Alloxan in wss. HCl bzw. in Essigsaeure unter Zusatz von Natriumacetat und H3BO3;
7647-01-0

hydrogenchloride

146-14-5

flavin adenine dinucleotide

A

1088-56-8

lumiflavin

B

61-19-8

5'-adenosine monophosphate

C

146-17-8

Flavin mononucleotide

D

83-88-5

riboflavin

Conditions
ConditionsYield
Adenin, O5-Phosphono-D-ribose und H3PO4;
146-14-5

flavin adenine dinucleotide

A

1088-56-8

lumiflavin

B

61-19-8

5'-adenosine monophosphate

C

146-17-8

Flavin mononucleotide

D

83-88-5

riboflavin

Conditions
ConditionsYield
vom pH 3-9;
bei der Einwirkung von Sonnenlicht;
146-17-8

Flavin mononucleotide

A

1088-56-8

lumiflavin

B

83-88-5

riboflavin

C

lumichrome

lumichrome

Conditions
ConditionsYield
mit sichtbares oder ultraviolettes Licht.Irradiation;

riboflavin

83-88-5

riboflavin

Conditions
ConditionsYield
With Escherichia coli ribonucleotide reductase active-R2 form In phosphate buffer at 22℃; pH=7.0; Kinetics; Further Variations:; Reagents; Oxidation;

riboflavin

B

83-88-5

riboflavin

Conditions
ConditionsYield
In phosphate buffer at 22℃; pH=7.0; Kinetics; disproportionation;
2535-20-8

6,7-dimethyl-8-ribityllumazine

A

14036-89-6, 17014-74-3

5-amino-6-(D-ribitylamino)uracil

B

83-88-5

riboflavin

Conditions
ConditionsYield
With ethylenediaminetetraacetic acid; riboflavin synthase from Escherichia coli; 5-(4-phosphonobutyryl)amino-6-D-ribitylaminouracil In phosphate buffer Enzyme kinetics; Further Variations:; Reagents;
With Tris hydrochloride buffer; sodium chloride In dimethyl sulfoxide at 27℃; pH=7.0; Enzyme kinetics; Further Variations:; Reagents;
With recombinant Mycobacterium tuberculosis riboflavin synthase; 2-(2-oxo-1,2-dihydrobenzo[cd]indole-6-sulfonamido)ethyl dihydrogen phosphate; water; tris hydrochloride; sodium chloride; D,L-dithiothreitol In dimethyl sulfoxide at 27℃; for 0.5h; pH=7; Kinetics; Reagent/catalyst; aq. buffer; Enzymatic reaction;
3051-94-3

3,4-dimethyl-N-ribitylaniline

A

83-88-5

riboflavin

B

Na2S2O4

Na2S2O4

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 1.) 34percent aq. HCl, 40percent aq. sodium nitrite, 2.) 20percent aq. sodium acetate / 1.) 15-20 deg C, 2.) 2 h
2: 74.2 percent / butan-1-ol; acetic acid / 4 h / Heating
View Scheme
3051-94-3

3,4-dimethyl-N-ribitylaniline

83-88-5

riboflavin

911650-71-0

L-ribo-5-(3.4-dimethyl-anilino)-1.2.3.4-tetraacetoxy-pentane

83-88-5

riboflavin

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: und Behandlung des Reaktionsprodukts mit Natriummethylat in Methanol
View Scheme
Multi-step reaction with 2 steps
1: und Behandlung des Reaktionsprodukts mit Natriummethylat in Methanol
View Scheme
67-52-7

BARBITURIC ACID

21037-26-3, 113473-93-1

1-N-D-ribitylamino-3,4-dimethyl-6-phenylazobenzene

83-88-5

riboflavin

Conditions
ConditionsYield
With Trimethylacetic acid In 2-methyl-propan-1-ol
In 2-methyl-propan-1-ol
In 2-methyl-propan-1-ol
67-52-7

BARBITURIC ACID

110-19-0

2-methylpropyl acetate

21037-26-3, 113473-93-1

1-N-D-ribitylamino-3,4-dimethyl-6-phenylazobenzene

83-88-5

riboflavin

Conditions
ConditionsYield
In 2-methyl-propan-1-ol; acetic acid
108-24-7

acetic anhydride

83-88-5

riboflavin

752-13-6

tetra-O-acetyl riboflavin

Conditions
ConditionsYield
With pyridine at 120℃; for 0.333333h;99%
With perchloric acid In acetic acid at 40℃; for 0.5h;95%
With perchloric acid In acetic acid at 40℃; for 1h; Inert atmosphere;95%
83-88-5

riboflavin

4250-90-2

Formylmethylflavin

Conditions
ConditionsYield
Stage #1: riboflavin With sulfuric acid; periodic acid In water at 0℃; for 0.5h; Darkness;
Stage #2: With sodium carbonate In water at 18 - 25℃; pH=3.8 - 3.9;
94%
Stage #1: riboflavin With sulfuric acid; periodic acid at 20℃; for 1h;
Stage #2: In toluene Heating; Further stages.;
49%
With sulfuric acid; periodic acid unter Liehtausschluss;
1125-88-8

benzaldehyde dimethyl acetal

83-88-5

riboflavin

10-(2,6-diphenyl-tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxin-4-ylmethyl)-7,8-dimethyl-10H-benzo[g]pteridine-2,4-dione

Conditions
ConditionsYield
With camphor-10-sulfonic acid In N,N-dimethyl-formamide Etherification;90%
15529-90-5

(triethylphosphine)chlorogold(I)

83-88-5

riboflavin

97860-53-2

(C2H5)3PAu(C17H19N4O6)*H2O

Conditions
ConditionsYield
With NaOH; H2O In water addn. of solid Et3PAuCl to a soln. of riboflavin in aq. NaOH; the mixt.was shaken for 5 min.;; the ppt. was filtered off, washed with H2O, acetone, and Et2O, and dried under vac.; elem. anal.;;90%
83-88-5

riboflavin

825630-94-2

10-(2,2-dihydroxylethyl)-7,8-dimethylisoalloxazine

Conditions
ConditionsYield
With sodium periodate In water at 25℃; for 17h;86%
With sodium periodate In water at 20℃; for 16h; Darkness;76%
With sodium periodate
With sodium periodate In water for 3h;
With sodium periodate In water at 20℃;
83-88-5

riboflavin

18650-70-9

6,7-dimethyl-1-((2S,3S,4R)-2,3,4,5-tetrahydroxypentyl)-1,4-dihydroquinoxaline-2,3-dione

Conditions
ConditionsYield
Stage #1: riboflavin With sodium hydroxide at 90℃; for 1h;
Stage #2: With dihydrogen peroxide In water at 0 - 20℃; for 12h;
84%
Multi-step reaction with 2 steps
1.1: sodium hydroxide / 1 h / 90 °C / Inert atmosphere
1.2: 0 °C / pH 3 / Inert atmosphere
2.1: sodium hydroxide; dihydrogen peroxide / water / 12 h / 0 - 20 °C / Inert atmosphere
View Scheme
103-82-2

phenylacetic acid

83-88-5

riboflavin

1043592-39-7

tetraphenylacetyl riboflavin

Conditions
ConditionsYield
With pyridine; trichlorophosphate at 73℃; for 4.5h; Inert atmosphere;82%
108-24-7

acetic anhydride

64-19-7

acetic acid

83-88-5

riboflavin

752-13-6

tetra-O-acetyl riboflavin

Conditions
ConditionsYield
With perchloric acid at 45℃; for 0.666667h; Schlenk technique;80%
With perchloric acid
4530-20-5

BOC-glycine

83-88-5

riboflavin

tert-butoxycarbonylaminoacetic acid 2,3,4-tris-(2-tert-butoxycarbonylamino-acetoxy)-5-(7,8-dimethyl-2,4-dioxo-3,4-dihydro-2H-benzo[g]pteridin-10-yl)-pentyl ester

Conditions
ConditionsYield
With dmap; triethylamine; diisopropyl-carbodiimide In N,N-dimethyl-formamide at 50℃; Darkness; Inert atmosphere;78%
83-88-5

riboflavin

64480-68-8

6,7-dimethyl-3-oxo-4-((2S,3S,4R)-2,3,4,5-tetrahydroxypentyl)-3,4-dihydroquinoxaline-2-carboxylic acid

Conditions
ConditionsYield
Stage #1: riboflavin With sodium hydroxide at 90℃; for 1h; Inert atmosphere;
Stage #2: With sulfuric acid In water at 0℃; pH=3; Inert atmosphere;
74%
Stage #1: riboflavin With water; sodium hydroxide at 90℃; for 2h;
Stage #2: With acetic acid at 20℃; pH=6;
41 g
67-64-1

acetone

83-88-5

riboflavin

95985-96-9

7,8-dimethyl-10-(((4S,4'R,5S)-2,2,2',2'-tetramethyl-[4,4'-bi(1,3-dioxolan)]-5-yl)methyl)benzo[g]pteridine-2,4(3H,10H)-dione

Conditions
ConditionsYield
With toluene-4-sulfonic acid In N,N-dimethyl-formamide at 20℃; for 72h;72%
83-88-5

riboflavin

1086-80-2

lumichrome

Conditions
ConditionsYield
With sodium periodate In water at 50℃; for 24h;70%
With sodium periodate In water at 50℃; for 24h;70%
With methanol; air
112-67-4

n-hexadecanoyl chloride

83-88-5

riboflavin

752-75-0

tetra-O-palmitoyl riboflavin

Conditions
ConditionsYield
With dmap at 40℃; for 12h; Inert atmosphere;67%
76-83-5

trityl chloride

83-88-5

riboflavin

136738-76-6

5'-O-Trityl riboflavin

Conditions
ConditionsYield
With pyridine at 110℃; for 1h;64%
In pyridine at 110℃; for 4h;63.4%
With pyridine
75-07-0

acetaldehyde

83-88-5

riboflavin

1083303-50-7

5-ethyl-1,5-dihydroriboflavin

Conditions
ConditionsYield
With palladium 10% on activated carbon; water; hydrogen In ethanol at 20℃; for 168h;62%
93429-66-4

4-vinylbenzaldehyde diethyl acetal

83-88-5

riboflavin

2',4'-p-vinylbenzylideneribo flavin

Conditions
ConditionsYield
With p-toluenesulfonic acid monohydrate; hydroquinone In N,N-dimethyl-formamide at 80℃; for 3h; Inert atmosphere;56%
1125-88-8

benzaldehyde dimethyl acetal

83-88-5

riboflavin

278793-03-6

10-[(2S,4S,5S,6R)-5-hydroxy-6-(hydroxymethyl)-2-phenyl-1,3-dioxan-4-yl]methyl-7,8-dimethylbenzo[g]pteridine-2,4(3H,10H)-dione

Conditions
ConditionsYield
With camphor-10-sulfonic acid In N,N-dimethyl-formamide Etherification;50%
With (1S)-10-camphorsulfonic acid In N,N-dimethyl-formamide at 80℃; Darkness;22%
With camphor-10-sulfonic acid In N,N-dimethyl-formamide at 50℃; under 45.0045 Torr; for 16h;14%

13C10/15N5-adenosine triphosphate

83-88-5

riboflavin

C17(13)C10H33N4(15)N5O15P2

Conditions
ConditionsYield
With Phosphocreatine; creatine phosphokinase from rabbit muscle; corynebacterium ammoniagenes FAD synthetase; 2-amino-2-hydroxymethyl-1,3-propanediol; magnesium chloride In aq. buffer at 25℃; for 24h; pH=7.6; Enzymatic reaction;47%
14470-28-1

mono-4-methoxytrityl chloride

83-88-5

riboflavin

C37H36N4O7

Conditions
ConditionsYield
With pyridine at 100℃; Inert atmosphere;44%

[2,8-3H]ATP

83-88-5

riboflavin

C27H31(3)H2N9O15P2

Conditions
ConditionsYield
With Phosphocreatine; creatine phosphokinase from rabbit muscle; corynebacterium ammoniagenes FAD synthetase; ATP; 2-amino-2-hydroxymethyl-1,3-propanediol; magnesium chloride In aq. buffer at 25℃; for 24h; pH=7.6; Enzymatic reaction;40%
112-16-3

n-dodecanoyl chloride

83-88-5

riboflavin

5'-lauric acid monoester of riboflavin

Conditions
ConditionsYield
With pyridine; triethylamine In 1,4-dioxane; water at 5 - 10℃; for 0.583333h;38.9%
40615-36-9

4,4'-dimethoxytrityl chloride

83-88-5

riboflavin

10-(5-(bis(4-methoxyphenyl)(phenyl)-methoxy)-2,3,4-trihydroxypentyl)-7,8-dimethylbenzo[g]-pteridine-2,4(3H,10H)-dione

Conditions
ConditionsYield
With pyridine; dmap; triethylamine at 20℃; Inert atmosphere;35%
57392-44-6

2,2,2-trichloroethyl butyrate

83-88-5

riboflavin

20704-80-7

riboflavin 5'-monobutyrate

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 45℃; for 144h; subtilisin;25%

C28H36N10O15P4

83-88-5

riboflavin

740066-94-8

C31H39N9O14P2

Conditions
ConditionsYield
In dimethyl sulfoxide at 65℃;12.5%
106-31-0

butanoic acid anhydride

83-88-5

riboflavin

A

20704-80-7

riboflavin 5'-monobutyrate

B

752-56-7

riboflavin 2’,3’,4’,5’-tetrabutanoate

Conditions
ConditionsYield
With pyridine at 37℃; for 14h;A 10%
B n/a
623-65-4

palmitic anhydride

83-88-5

riboflavin

73130-89-9

riboflavin-5'-monopalmitate

Conditions
ConditionsYield
With pyridine at 120 - 140℃; for 3h;9.8%
  • Vitamin B2 (Riboflavin)

  • Casno:

    83-88-5

    MSDS/COA Download

    Vitamin B2 (Riboflavin)

    Min.Order: 25 Metric Ton

    FOB Price:  USD $ 1.0-1.0/Metric Ton

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  • Riboflavin Vitamin B2

  • Casno:

    83-88-5

    Riboflavin Vitamin B2

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  • Vitamin B2  riboflavin 80% FEED GRADE

  • Casno:

    83-88-5

    Vitamin B2 riboflavin 80% FEED GRADE

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  • Riboflavin

  • Casno:

    83-88-5

    Riboflavin

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  • Riboflavin Vitamin B2

  • Casno:

    83-88-5

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    Business Type:Trading Company

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    83-88-5

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    1. GMP AVALIABLE ; 2. IN STOCK 3. FAST REPLY QUALIFED ; EFFICIENCY; RESPONSIBLE Appearance:Yellow or orange-yellow crystalline powder Storage:in cool Package:25kg/drum Application:active pharmaceutical ingredient Transportation:to

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    83-88-5

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    Min.Order: 25 Kilogram

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    Riboflavin/ Vitamin B2 Product Name: Riboflavin Synonyms: Lactoflavine; E 101; Riboflavin (1.07609); Riboflavine; Vitamin B_2; Vitamin B2; VB2; 1-deoxy-1-(7,8-dimethyl-2,4-dioxo-3,4-dihydrobenzo[

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    Business Type:Trading Company

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  • Riboflavin(VitaminB2)

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    83-88-5

    Riboflavin(VitaminB2)

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    1,10 years exporting experience; 2.Competitive price and quality; 3,Free sample can be provided; 4,We are sincerely responsible for the"sample quality" , "product quality" and "After Service"; 5. prompt deliver

    Enbridge PharmTech Co., Ltd. is an innovative company integrated with R&D, manufacturing, marketing and distribution of intermediates and fine chemicals, mainly used to pharmaceuti

  •  EnBridge PharmTech Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-510-83591909

    Address:Huishan Zone, Wuxi City, Jiangsu Province, P.R.China

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  • Riboflavin

  • Casno:

    83-88-5

    Riboflavin

    Min.Order: 0

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    Cartoon Ingredients Co.,Ltd.is located in NanJing, the capital of Jiangsu Province.with Convenient traffic As a manufacturer, the company mainly engaged in providing Food ingredients, Herbal extracts, Vitamins, APIs and Fine chemicals &a

            Cartoon Ingredients Co.,Ltd.is located in NanJing, the capital of Jiangsu Province.with Convenient traffic. As a manufacturer, th

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    Business Type:Trading Company

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    Address:Room 2109, RuiHua Business Center,315 South ZhongShan Road, Nanjing 210001, China

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  • Riboflavin

  • Casno:

    83-88-5

    Riboflavin

    Min.Order: 0 Metric Ton

    FOB Price:  USD $ 0.0-0.0/Metric Ton

    Riboflavin (vitamin B2) BP2015/USP39 pharm grade, good quality Appearance:yellow powder Storage:cool and dry place Package:25kgs drum Application:pharmaceutical and nutritional products Transportation:normal

    Jiaxing Barton Chemicals Inc is a leading pine chemical products supplier in China, annual sales more than $15 million. supply pine chemicals, essential oils, fragrance & flavor us

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    Business Type:Trading Company

    Tel:+86-573-82719618

    Address:No. 162 Fumin Road, Honghe Town,

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  • Riboflavin Manufacturer/High quality/Best price/In stock

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    83-88-5

    Riboflavin Manufacturer/High quality/Best price/In stock

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    As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch

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  •  Dayang Chem (Hangzhou) Co.,Ltd.

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    Business Type:Lab/Research institutions

    Tel:+86-571-88938639

    Address:9/F, Unit 2 Changdi Torch Building, 259# WenSan Road, Xihu District, Hangzhou City 310012, P.R.China

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  • High quality Vitamin B2  80% supplier in China

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    83-88-5

    High quality Vitamin B2 80% supplier in China

    Min.Order: 1 Kilogram

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    Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

    Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional

  •  Simagchem Corporation

     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:+86-592-2680277

    Address:21/F Hualong Office Building,No.6 Hubin East Road, Xiamen,China

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  • Factory supply Vitamin B2  Riboflavin

  • Casno:

    83-88-5

    Factory supply Vitamin B2 Riboflavin

    Min.Order: 1 Kilogram

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    Superiority KONO is a leading manufacturer and supplier of chemicals in China. We develop ,produce and distribute high quality pharmaceuticals, intermediates, special chemicals and other fine chemicals. We could give you: 1.Best quality

    Kono Chem Co.,Ltd is a leading producer of standardized herbal extracts, natural active ingredients and APIs for pharmaceutical, health food and cosmetic industries. Annually, mo

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    Business Type:Other

    Tel:86-29-86107037-8015

    Address:No.11 Daqing Road,Lianhu District,Xi’an 710082,China

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  • Riboflavin, food additive and USP grade

  • Casno:

    83-88-5

    Riboflavin, food additive and USP grade

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 1.0-1.0/Kilogram

    Items of Test Limits of Test Results of Test 1.Appearance Orange yellow crystalline powder Meets

    Hebei yanxi chemical co. LTD. has expanded a compositive entity from initially only as a small manufacturer. The company dedicated to the development, production and marketing of

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    Business Type:Manufacturers

    Tel:86-0311-66561638

    Address:Zhang zhe, guangzong county, xingtai city, hebei province

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  • Factory supply Riboflavin (Vitamin B2) CAS 83-88-5 of USP/ FCC standard

  • Casno:

    83-88-5

    Factory supply Riboflavin (Vitamin B2) CAS 83-88-5 of USP/ FCC standard

    Min.Order: 25 Kilogram

    FOB Price:  USD $ 58.0-61.0/Kilogram

    Unique advantages for Riboflavin (Vitamin B2) CAS 83-88-5 Guaranteed purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:Yellow or orange-yellow crystalline powder Storage:Store in 2-8℃ P

    Wuhan Fortuna Chemical Co., Ltd, located in the predominant Wu Han City where is a traffic hinge of China, is a big integrative chemical enterprise being engaged in producing and

  •  Wuhan Fortuna Chemical Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:86-27-59207852

    Address:A2705,Dong Yi Shi Qu,129# XinHua Road,WuHan,China

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  • Vitamin B2 Riboflavin CAS:83-88-5

  • Casno:

    83-88-5

    MSDS/COA Download

    Vitamin B2 Riboflavin CAS:83-88-5

    Min.Order: 1 Metric Ton

    FOB Price:  USD $ 80.0-90.0/Metric Ton

    Description Vitamin B2 /Riboflavin Appearance:white crystal or crystalline powder Molecular Formula:C17H20N4O6 Characteristics: orange yellow crystalline powder; micro foul, bitter taste Assay :

    Xi'an Harmonious Natural Bio-Technology Co., Ltd. was founded in 2010, and located in Xian International Logistics Industrial Zone, Xi'an City, Shaanxi Province, China. Now it is

  •  Xi'an Harmonious Natural Bio-Technology Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-029-86712509

    Address:huilinhuacheng 10-2104

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  • Riboflavin Vitamin B2 83-88-5

  • Casno:

    83-88-5

    Riboflavin Vitamin B2 83-88-5

    Min.Order: 1 Metric Ton

    FOB Price:  USD $ 0.0-0.0/Metric Ton

    1, Full experience of large numbers containers loading in main Chinese seaports 2, Packing with pallet as buyer's special request 3, Best service after shipment with e-mail 4, Cargoes together with container sales service available

    TNJ is a chemical company since 2001. Our specialization, your confidence-we keep committing to meet the needs of markets and customers with our innovative technology and high stab

  •  Hefei TNJ chemical industry co.,ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-551-65418695

    Address:B911 Xincheng Business Center, Qianshan Road, Hefei Anhui China

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  • Vitamin B2

  • Casno:

    83-88-5

    Vitamin B2

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 2.0-3.0/Kilogram

    Vitamin B2 Commodity Name Riboflavin Flowing Particle(Vitamin B2 80%) Vitamin B2 98% CAS No 83-88-5 83-88-5 M.F. C17H20N4O6 C17H20N4O6 M.W.

    Founded in 2008, East Chemsources Limited is a professional manufacturer of supplier in food and beverage, pharmaceuticals, cosmetics and other industries. pharmaceutical field in

  •  EAST CHEMSOURCES LIMITED

    China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:86-532-81906761

    Address:No.1581-12,Jinshui Road, Licang, Qingdao,China

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  • 83-88-5, safety delivery 99% Riboflavin from China factory

  • Casno:

    83-88-5

    83-88-5, safety delivery 99% Riboflavin from China factory

    Min.Order: 100 Gram

    FOB Price:  USD $ 10.0-20.0/Gram

    We provide DOOR-TO-DOOR shipping, including customs clearance, more details please contact with us, or visit our website: www.whmulei.com Mulei (Wuhan) New Material Technology Co. Ltd is a scientific and technological company integrating pro

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     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+8619831967063

    Address:Office1201#, Block C, Hanjie Headquarters International Plaza, Zhongbei Rd, Wuchang District, Wuhan

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  • factory supply Vitamin B2 Riboflavin 83-88-5

  • Casno:

    83-88-5

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    Min.Order: 10 Gram

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    High quality, best service,competitive price are our principle 1.Low price & high quality products (G-KG) & first-class service are waiting for our clients 2.Professional transport tea High quality, best service,competiti

    Hebei Yingong New Material Technology Co.,Ltd is one of the most dynamic research and advanced technology companies.We now have the most complete range of pharmaceutical intermedia

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     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-18034554576

    Address:Shijiazhuang

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  • Top quality 83-88-5Supply Vitamin B2Riboflavin in China

  • Casno:

    83-88-5

    MSDS/COA Download

    Top quality 83-88-5Supply Vitamin B2Riboflavin in China

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 80.0-80.0/Kilogram

    1.High quality and competitive price. 2.Free sample for your evaluation. 3.Promptly delivery by well-reputed shipping lines. 4.Trial order is available for testing after samples. 5.We will inform you all the information at every stage in advanc

    Shaanxi greenyo biotech co., ltd is one specialized company which engaged in the naturalplant extracts, pharmaceutical intermediates, chemical raw materials research and developmen

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     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:86-29-81772657

    Address:Gaoxin 4th road, High-tech zone,

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  • Manufacturer supply Vitamin B2/Riboflavin powder with good price

  • Casno:

    83-88-5

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    Min.Order: 100 Gram

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    Manufacturer supply Vitamin B2/Riboflavin powder with good price TAIHO Unique Advantages: We're factory Free samples available Commodity inspection can be done ISO9001,Kosher certifications Appearance:Orange Yellow Powder Storage:Keep in sealed

    As a member of TAIHO Group,Hubei Taiho Chemical Co.,Ltd,is a professional new-type chemicals enterprise combined into research and development,production and sales.We adhere to the

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     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:+86-18120399543

    Address:No. 49 taifeng Road,Qianjiang City,Hubei,China

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    83-88-5

    MSDS/COA Download

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    We promise our customer following items: 1.Support product customization: We can provide OEM&ODM , Because we have a professional design team 2.Reasonable price: We provide high quality products with competitive price in china, 3.Low moq: No

    Xi'an Julong Bio-Tech Co., Ltd. is located in Xi'an City, Shaanxi Province, China. It is a biotechnology enterprise engaged in the research, development, production and sales of S

  •  Xi'an Julong Bio-Tech Co., Ltd.

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    Business Type:Trading Company

    Tel:+008618049624045

    Address:Xi'an

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  • Food Grade 98% Riboflavin / Vitamin B2 Powder CAS: 83-88-5

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    83-88-5

    MSDS/COA Download

    Food Grade 98% Riboflavin / Vitamin B2 Powder CAS: 83-88-5

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 59.0-69.0/Kilogram

    Come From Nature / Building Healthy Life Beauty In Your Face / Nourishment Your Taste Bud. Professional Factory: We has a complete production and operating system, with an annual output capacity of 2000 tons. It can produce variety of conten

    Xi 'an Quanao Biotech Co., Ltd. with 10 years experience in plant extract filed. Focus on the research, production and sale of Plant and Animal extract ,Medical intermediate ,compl

  •  Xi'an Quanao Biotech Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:+86-29-86719484

    Address:B-1604,Juncheng Guoji, Taiyuan Road, Weiyang distirct

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    83-88-5

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    1.Professional synthesis laboratory and production base. 2.Strong synthesis team and service team. 3.Professional data management system. 4.We provide the professional test date and product information ,ex. HNMR ,CNMR,FNMR, HPLC/G

    Founded in 2011, Amadis Chemical Company Limited is an innovative manufacturer of chemical products and technical service providers. Our business includes sales, manufacture, and s

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     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-571-89925085

    Address:Watts Cosine.No.166.Xiangmao Road.

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  • Riboflavin   CAS: 83-88-5

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    83-88-5

    Riboflavin CAS: 83-88-5

    Min.Order: 5 Metric Ton

    FOB Price:  USD $ 1.0-2.0/Metric Ton

    Name Riboflavin Synonyms 7,8-Dimethyl-10-ribitylisoalloxazine; Lactoflavine; Vitamin B2 Molecular Structure

    Welcome to Henan Sinotech! Sinotech Corporation has exceptional sourcing ability for chemicals used in Organic Fine Chemicals and APIs; Inorganic chemicals; Flame Retardants;OLED

  •  Henan Sinotech Import&Export Corporation

     China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:86-371-86181678

    Address:No. 260, Dongming Road,Jinshui District

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  • TIANFUCHEM-- 83-88-5--High purity Riboflavin in stock

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    83-88-5

    TIANFUCHEM-- 83-88-5--High purity Riboflavin in stock

    Min.Order: 1 Metric Ton

    FOB Price:  USD $ 2000.0-2000.0/Metric Ton

    TIANFUCHEM-- 83-88-5--High purity Riboflavin in stock Our company was built in 2009 with an ISO certificate.In the past 10 years, we have grown up as a famous fine chemicals supplier in China And we had established stable business relat

    Our company engages in Electronic chemicals such as OLED,Photoresist chemical,Electrolyte additive and Intermediate Pharmaceutical production; development of noble metal catalysts,

  •  Henan Tianfu Chemical Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-371-55170693/55170694

    Address:Zhengzhou International Trade New Territory,Jinshui District,Zhengzhou ,China

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  • Factory Supply 100% Pure Natural USP vitamin B2 Powder in stock

  • Casno:

    83-88-5

    Factory Supply 100% Pure Natural USP vitamin B2 Powder in stock

    Min.Order: 10 Kilogram

    FOB Price:  USD $ 0.0-0.0/Kilogram

    Vitamin B2 /Riboflavin Appearance:white crystal or crystalline powder Molecular Formula:C17H20N4O6 Characteristics: orange yellow crystalline powder; micro foul, bitter taste Assay : 98.0%-101.0% Vitamin B2, as one of the thirteen nec

    Shaanxi Mingqi Chemical Co., Ltd is committed to the development of import and export trade in the production, operation and plant extracts of pharmaceutical raw materials and inte

  •  Shaanxi Mingqi Chemical Co., Ltd

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:18092428356

    Address:Weiyang District

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  • high quality 83-88-5 Riboflavin  with best price

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    83-88-5

    high quality 83-88-5 Riboflavin with best price

    Min.Order: 10 Gram

    FOB Price:  USD $ 1.0-2.0/Gram

    1,Best Quality: Our products have exported to Germany, Spain, UK, USA, Australia, Middle East, and so on other countries, and we have got very good feedback from our customers.so

    Hubei Jusheng Technology Co., Ltd., is a large group corporation which engaged in the R&D and manufacture of chemicals, Pharmaceuticals and intermediates. We have earned ourselves

  •  Hubei Jusheng Technology Co., Ltd.,

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-18871490254

    Address:High-tech Industrial Park,Tianmen city,Hubei province.

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  • New production CAS 83-88-5 with best quality

  • Casno:

    83-88-5

    New production CAS 83-88-5 with best quality

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 139.0-210.0/Kilogram

    WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

    Zhuo Zhou Wen Xi Import and Export Co., Ltd. is a company mainly engaged in the export of pharmaceutical raw materials. Its parent company is (Wen Xi Pharma), including three subs

  •  Zhuozhou Wenxi import and Export Co., Ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-13111626072

    Address:Room 1710, Baoxin International Phase I, 19 Guanyun East Road, Zhuozhou, Hebei

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  • BLOOM TECH Advanced API/Technology support :Riboflavin CAS 83-88-5

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    83-88-5

    MSDS/COA Download

    BLOOM TECH Advanced API/Technology support :Riboflavin CAS 83-88-5

    Min.Order: 1 Gram

    FOB Price:  USD $ 0.0-0.0/Gram

    Inquiry guide 1.Please send the quantity(Weight) to us, we will arrange our sales to provide the one-for-one service for you. 2.Then we will provide the professional quotation list for you, it will be including all the factors in who

    WHO WE ARE 1.We Focus on the technology of Organic Synthesis since 2008. 2.API/Pharmaceutical intermediate/Fine chemical/New material/Extraction etc. 3.Chemical reagent: Over 300,0

  •  Shaanxi BLOOM TECH Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-29-86470566

    Address:Block A of Central Mansion, No.113 of Weiyang Rd, ETDZ, Xi'an, Shaanxi 710016, China

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  • Riboflavin/ LIDE PHARMA- Factory supply / Best price

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    83-88-5

    Riboflavin/ LIDE PHARMA- Factory supply / Best price

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    Advantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&

    LIDE PHARMACEUTICALS LIMITED is one of the fastest growing pharmaceutical company in China. We have developed strategic partnership with our manufacturing associates having state o

  •  LIDE PHARMACEUTICALS LIMITED

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-25-58409506

    Address:11F, Building A1, No.288 North Zhongshan Road, Gulou District, Nanjing,210003, P.R.China.

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  • Riboflavin CAS NO.83-88-5

  • Casno:

    83-88-5

    MSDS/COA Download

    Riboflavin CAS NO.83-88-5

    Min.Order: 10 Gram

    FOB Price:  USD $ 20.0-20.0/Gram

    our advantages: 1, high quality with competitive price: 1) standard:bp/usp/ep/enterprise standard 2) all purity≥99% 3) we are manufacturer and can provide high quality products with factory price. 2,

    HUBEI AOKS BIO-TECH CO.,LTD is located in Hubei province of China.We specialized in Active pharmaceutical ingredient,pharmaceutical intermediates,veterinary drug intermediates and

  •  HUBEI AOKS BIO-TECH CO.,LTD

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-27-52345788

    Address:28F,China Construction Third Bureau,Wuhan,Hubei Province, China

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  • Riboflavin 83-88-5

  • Casno:

    83-88-5

    Riboflavin 83-88-5

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0/Kilogram

    1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

    Shanghai Upbio Tech Co.,Ltd (Former Onchem (China)Co.,Ltd) is a comprehensive manufacturer and an international distribution of chemicals throughout the world, The predecessor of

  •  Shanghai Upbio Tech Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-21-52196435

    Address:No.2 Floor,No.979 Yunhan Rd,Nicheng,Pudong New Area,Shanghai,China

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History

 Riboflavin (CAS NO.83-88-5) was originally considered to have two components, a heat-labile vitamin B1 and a heat-stable vitamin B2 . In the 1920s, it was thought to be the factor necessary for preventing pellagra. Paul Gyorgi in Heidelberg was investigating egg white injury in rats in 1923,  the curative factor for this condition was called vitamin H. Since both pellagra and vitamin H deficiency were associated with dermatitis, Gyorgi decided to test the effect of vitamin B2 on vitamin H deficiency in rat. In 1933, Kuhn, Gyorgy, and Wagner found that thiamin-free extracts of yeast, liver, or rice bran prevented the growth failure of rats fed a thiamin supplemented diet. This observation enabled them to develop a rapid chemical and bioassay to isolate the factor from egg white in 1933, they called it Ovoflavin.

Specification

The Riboflavin, with the CAS registry number 83-88-5, is also known as 7,8-Dimethyl-10-ribitylisoalloxazine; Lactoflavine; Vitamin B2.It belongs to the product categories of Vitamin Ingredients;Miscellaneous Compounds;Chiral Reagents;Heterocycles;Intermediates & Fine Chemicals. Its EINECS number is 201-507-1.This chemical's molecular formula is C17H20N4O6 and molecular weight is 376.37. What's more,Its systematic name is Riboflavin. It is nutritional factor found in milk, eggs, malted barley, liver, kidney, heart, and leafy vegetables. The richest natural source is yeast. It occurs in the free form only in the retina of the eye, in whey, and in urine; its principal forms in tissues and cells are as flavin mononucleotide and flavin-adenine dinucleotide. And it is Stable, but light-sensitive. Incompatible with strong oxidizing agents, reducing agents, bases, calcium, metallic salts. May be moisture sensitive.when you use it, avoid contact with skin and eyes.

Physical properties about Riboflavin are:(1)ACD/LogP: 0.095; (2)# of Rule of 5 Violations: 2; (3)ACD/LogD (pH 5.5): 0.10; (4)ACD/LogD (pH 7.4): 0.09; (5)ACD/BCF (pH 5.5): 1.00; (6)ACD/BCF (pH 7.4): 1.00; (7)ACD/KOC (pH 5.5): 26.82; (8)ACD/KOC (pH 7.4): 26.74; (9)#H bond acceptors: 10; (10)#H bond donors: 5; (11)#Freely Rotating Bonds: 9; (12)Index of Refraction: 1.733; (13)Molar Refractivity: 91.104 cm3; (14)Molar Volume: 227.51 cm3; (15)Surface Tension: 70.2760009765625 dyne/cm; (16)Density: 1.654 g/cm3;

You can still convert the following datas into molecular structure:
(1)SMILES:O=C2/N=C\1/N(c3cc(c(cc3/N=C/1C(=O)N2)C)C)C[C@H](O)[C@H](O)[C@H](O)CO;
(2)Std. InChI:InChI=1S/C17H20N4O6/c1-7-3-9-10(4-8(7)2)21(5-11(23)14(25)12(24)6-22)15-13(18-9)16(26)20-17(27)19-15/h3-4,11-12,14,22-25H,5-6H2,1-2H3,(H,20,26,27)/t11-,12+,14-/m0/s1;
(3)Std. InChIKey:AUNGANRZJHBGPY-SCRDCRAPSA-NC;

The toxicity data of Riboflavin as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
dog LD oral > 2gm/kg (2000mg/kg)   Journal of Pharmacology and Experimental Therapeutics. Vol. 76, Pg. 75, 1942.
rat LD50 intraperitoneal 560mg/kg (560mg/kg) KIDNEY, URETER, AND BLADDER: URINE VOLUME DECREASED

BEHAVIORAL: FOOD INTAKE (ANIMAL)
Journal of Pharmacology and Experimental Therapeutics. Vol. 76, Pg. 75, 1942.
rat LD50 intravenous 50mg/kg (50mg/kg)   FAO Nutrition Meetings Report Series. Vol. 46A, Pg. 20, 1969.
rat LD50 oral > 10gm/kg (10000mg/kg)   Journal of Pharmacology and Experimental Therapeutics. Vol. 76, Pg. 75, 1942.
rat LD50 subcutaneous 5gm/kg (5000mg/kg)   Journal of Pharmacology and Experimental Therapeutics. Vol. 76, Pg. 75, 1942.