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Vitamin B2 (Riboflavin)
Cas No: 83-88-5
USD $ 1.0-1.0 / Metric Ton 25 Metric Ton 300 Metric Ton/Day EXCELLENT HEALTH PRODUCTS CO.,LTD Contact Supplier
Riboflavin Vitamin B2
Cas No: 83-88-5
No Data 1 Kilogram Metric Ton/Day Sunmore Healthcare Co., LTD. Contact Supplier
Vitamin B2 riboflavin 80% FEED GRADE
Cas No: 83-88-5
No Data 1 Metric Ton 5 Metric Ton/Day HENAN JIXIANG CO.,LTD Contact Supplier
professional supplier for 99% vitamin B2 VB 2 powder CAS 83-88-5
Cas No: 83-88-5
No Data 1 Metric Ton 15 Metric Ton/Month XI AN FORTA CHEM CO.,LTD Contact Supplier
Riboflavin
Cas No: 83-88-5
USD $ 60.0-60.0 / Gram 1 Gram 10000 Kilogram/Day Ningbo Qicheng Chemical Co.,Ltd. Contact Supplier
Riboflavin Vitamin B2
Cas No: 83-88-5
USD $ 18.0-21.0 / Kilogram 100 Kilogram 500 Metric Ton/Month Arshine Pharmaceutical Co., Limited Contact Supplier
Riboflavin
Cas No: 83-88-5
No Data 25 Kilogram Metric Ton/Day HANGZHOU CLAKE BIOTECH CO.,LTD Contact Supplier
99.9% Nutrition Supplement Vitamin B2vitamin B?/riboflavin CAS:83-88-5 White Crystals Powder
Cas No: 83-88-5
No Data 100 Gram 20000 Kilogram/Day Hubei XinRunde Chemical Co., Ltd Contact Supplier
Riboflavin,Vitamin B2
Cas No: 83-88-5
USD $ 5.0-5.0 / Kilogram 25 Kilogram 1000 Kilogram/Month Purestar Chem Enterprise Co.,Ltd Contact Supplier
Riboflavin(VitaminB2)
Cas No: 83-88-5
No Data 1 Kilogram 5-10 Metric Ton/Month EnBridge PharmTech Co., Ltd. Contact Supplier

83-88-5 Usage

Definition

ChEBI: D-Ribitol in which the hydroxy group at position 5 is substituted by a 7,8-dimethyl-2,4-dioxo-3,4-dihydrobenzo[g]pteridin-10(2H)-yl moiety. It is a nutritional factor found in milk, eggs, malted barley, liver, kidney, heart, and leafy vege ables, but the richest natural source is yeast. The free form occurs 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.

Brand name

Flavaxin (Sterling Winthrop).

Purification Methods

It crystallises from H2O as a yellow-orange powder in three different forms with differing amounts of H2O. It melts if placed in an oil bath at 250o, but decomposes at 280o if heated at a rate of 5o/minute. It is also purified by crystallisation from 2M acetic acid, then extracted with CHCl3 to remove lumichrome impurity. [Smith & Metzler J Am Chem Soc 85 3285 1963.] Its solubility in H2O is 1g in 3-15L depending on the crystal structure. Its solubility in EtOH at 25o is 4.5mg in 100mL. Store it in the dark because it is decomposed to lumichrome by UV light. [Pearson The Vitamins vol V pp1-96 1967 and vol VII pp 1-96 1972, Gy.gy and Pearson eds, Academic Press, Beilstein 26 IV 2542.]

Uses

Nutritional factor found in milk, eggs, malted barley, liver, kidney, heart, leafy vegetables. Richest natural source is yeast. Minute amounts present in all plant and animal cells. Vitamin (enzyme cofactor).

Uses

Vitamin B2; Vitamin cofactor; LD50(rat) 560 mg/kg ip

Chemical Properties

Yellow to orange/yellow crystalline powd
InChI:InChI=1/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

83-88-5 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
USP (1603006)  Riboflavin  United States Pharmacopeia (USP) Reference Standard 83-88-5 1603006-500MG 4,662.45CNY Detail
Cerilliant (V-015)  (−)-Riboflavin (Vitamin B2) solution  100 μg/mL (Methanol:0.1% Ammonium acetate in Water (1:1)), ampule of 1 mL, certified reference material 83-88-5 V-015-1ML 863.46CNY Detail
Sigma-Aldrich (Y0000757)  Riboflavinforpeakidentification  European Pharmacopoeia (EP) Reference Standard 83-88-5 Y0000757 1,880.19CNY Detail
Sigma-Aldrich (R0600000)  Riboflavin  European Pharmacopoeia (EP) Reference Standard 83-88-5 R0600000 1,880.19CNY Detail
Supelco (47861)  Riboflavin(B2)  analytical standard 83-88-5 000000000000047861 195.39CNY Detail
Sigma-Aldrich (PHR1054)  Riboflavin  pharmaceutical secondary standard; traceable to USP and PhEur 83-88-5 PHR1054-1G 732.19CNY Detail
Alfa Aesar (A11764)  Riboflavin, 98%    83-88-5 100g 541.0CNY Detail
Alfa Aesar (A11764)  Riboflavin, 98%    83-88-5 25g 168.0CNY Detail
TCI America (R0020)  Riboflavin   83-88-5 500g 1,990.00CNY Detail
TCI America (R0020)  Riboflavin   83-88-5 100g 630.00CNY Detail
TCI America (R0020)  Riboflavin   83-88-5 25g 250.00CNY Detail

83-88-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name Riboflavin (B2)

1.2 Other means of identification

Product number -
Other names Riboflavin

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:83-88-5 SDS

83-88-5Synthetic route

BARBITURIC ACID
67-52-7

BARBITURIC ACID

N-<3,4-dimethyl-6-(phenylazo)phenyl>-D-ribitylamine
21037-26-3

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

riboflavin
83-88-5

riboflavin

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

tetra-O-acetyl riboflavin

riboflavin
83-88-5

riboflavin

Conditions
ConditionsYield
With calcium methylate
With sodium methylate
1,4-dioxane
123-91-1

1,4-dioxane

BARBITURIC ACID
67-52-7

BARBITURIC ACID

N-<3,4-dimethyl-6-(phenylazo)phenyl>-D-ribitylamine
21037-26-3

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

acetic acid
64-19-7

acetic acid

riboflavin
83-88-5

riboflavin

BARBITURIC ACID
67-52-7

BARBITURIC ACID

1-(2-biphenyl-2-ylazo-4,5-dimethyl-anilino)-D-1-deoxy-ribitol
123128-64-3

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

riboflavin
83-88-5

riboflavin

violuric acid
87-39-8

violuric acid

3,4-dimethyl-N-ribitylaniline
3051-94-3

3,4-dimethyl-N-ribitylaniline

riboflavin
83-88-5

riboflavin

Conditions
ConditionsYield
With boric acid
With propionic acid
6,7-dimethyl-8-ribityllumazine
2535-20-8

6,7-dimethyl-8-ribityllumazine

dimethylglyoxal
431-03-8

dimethylglyoxal

riboflavin
83-88-5

riboflavin

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
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

riboflavin
83-88-5

riboflavin

Conditions
ConditionsYield
In water Rate constant;
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
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

1-hydroxyethylhydroperoxide
19393-68-1

1-hydroxyethylhydroperoxide

B

riboflavin
83-88-5

riboflavin

Conditions
ConditionsYield
In water Rate constant;
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
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

peroxy-t-butanol
69515-12-4

peroxy-t-butanol

B

riboflavin
83-88-5

riboflavin

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

lampteroflavin

riboflavin
83-88-5

riboflavin

Conditions
ConditionsYield
With hydrogenchloride at 60℃; for 1.33333h;
2,5-diamino-6-hydroxy-4-ribitylaminopyrimidine-5'-phosphate
71491-00-4

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

dimethylglyoxal
431-03-8

dimethylglyoxal

riboflavin
83-88-5

riboflavin

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

dimethylglyoxal

2,5-Diamino-6-ribitylamino-4(3H)-pyrimidinone 5'-phosphate
71491-00-4

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

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

riboflavin
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
5,5-Dichloro-barbituric 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

riboflavin
83-88-5

riboflavin

Conditions
ConditionsYield
With pyridine
5,5-dibromobarbituric acid
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

riboflavin
83-88-5

riboflavin

Conditions
ConditionsYield
With acetic acid
N-<3,4-dimethyl-6-(phenylazo)phenyl>-D-ribitylamine
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

riboflavin
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

riboflavin
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;
hydrogenchloride
7647-01-0

hydrogenchloride

flavin adenine dinucleotide
146-14-5

flavin adenine dinucleotide

A

lumiflavin
1088-56-8

lumiflavin

B

5'-adenosine monophosphate
61-19-8

5'-adenosine monophosphate

C

Flavin mononucleotide
146-17-8

Flavin mononucleotide

D

riboflavin
83-88-5

riboflavin

Conditions
ConditionsYield
Adenin, O5-Phosphono-D-ribose und H3PO4;
water
7732-18-5

water

flavin adenine dinucleotide
146-14-5

flavin adenine dinucleotide

A

lumiflavin
1088-56-8

lumiflavin

B

5'-adenosine monophosphate
61-19-8

5'-adenosine monophosphate

C

Flavin mononucleotide
146-17-8

Flavin mononucleotide

D

riboflavin
83-88-5

riboflavin

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

Flavin mononucleotide

A

lumiflavin
1088-56-8

lumiflavin

B

riboflavin
83-88-5

riboflavin

C

lumichrome

lumichrome

Conditions
ConditionsYield
mit sichtbares oder ultraviolettes Licht.Irradiation;
riboflavin

riboflavin

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

riboflavin

A

RFH2
13345-95-4

RFH2

B

riboflavin
83-88-5

riboflavin

Conditions
ConditionsYield
In phosphate buffer at 22℃; pH=7.0; Kinetics; disproportionation;
6,7-dimethyl-8-ribityllumazine
2535-20-8

6,7-dimethyl-8-ribityllumazine

A

5-amino-6-(D-ribitylamino)uracil
14036-89-6, 17014-74-3

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

B

riboflavin
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;
3,4-dimethyl-N-ribitylaniline
3051-94-3

3,4-dimethyl-N-ribitylaniline

A

riboflavin
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
3,4-dimethyl-N-ribitylaniline
3051-94-3

3,4-dimethyl-N-ribitylaniline

riboflavin
83-88-5

riboflavin

L-ribo-5-(3.4-dimethyl-anilino)-1.2.3.4-tetraacetoxy-pentane
911650-71-0

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

riboflavin
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
BARBITURIC ACID
67-52-7

BARBITURIC ACID

1-N-D-ribitylamino-3,4-dimethyl-6-phenylazobenzene
21037-26-3, 113473-93-1

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

riboflavin
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
BARBITURIC ACID
67-52-7

BARBITURIC ACID

2-methylpropyl acetate
110-19-0

2-methylpropyl acetate

1-N-D-ribitylamino-3,4-dimethyl-6-phenylazobenzene
21037-26-3, 113473-93-1

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

riboflavin
83-88-5

riboflavin

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

acetic anhydride

riboflavin
83-88-5

riboflavin

tetra-O-acetyl 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%
riboflavin
83-88-5

riboflavin

Formylmethylflavin
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;
benzaldehyde dimethyl acetal
1125-88-8

benzaldehyde dimethyl acetal

riboflavin
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

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%
(triethylphosphine)chlorogold(I)
15529-90-5

(triethylphosphine)chlorogold(I)

riboflavin
83-88-5

riboflavin

(C2H5)3PAu(C17H19N4O6)*H2O
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%
riboflavin
83-88-5

riboflavin

10-(2,2-dihydroxylethyl)-7,8-dimethylisoalloxazine
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℃;
riboflavin
83-88-5

riboflavin

6,7-dimethyl-1-((2S,3S,4R)-2,3,4,5-tetrahydroxypentyl)-1,4-dihydroquinoxaline-2,3-dione
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
phenylacetic acid
103-82-2

phenylacetic acid

riboflavin
83-88-5

riboflavin

tetraphenylacetyl riboflavin
1043592-39-7

tetraphenylacetyl riboflavin

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

acetic anhydride

acetic acid
64-19-7

acetic acid

riboflavin
83-88-5

riboflavin

tetra-O-acetyl riboflavin
752-13-6

tetra-O-acetyl riboflavin

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

BOC-glycine

riboflavin
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

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%
riboflavin
83-88-5

riboflavin

6,7-dimethyl-3-oxo-4-((2S,3S,4R)-2,3,4,5-tetrahydroxypentyl)-3,4-dihydroquinoxaline-2-carboxylic acid
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
acetone
67-64-1

acetone

riboflavin
83-88-5

riboflavin

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
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%
riboflavin
83-88-5

riboflavin

lumichrome
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
n-hexadecanoyl chloride
112-67-4

n-hexadecanoyl chloride

riboflavin
83-88-5

riboflavin

tetra-O-palmitoyl riboflavin
752-75-0

tetra-O-palmitoyl riboflavin

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

trityl chloride

riboflavin
83-88-5

riboflavin

5'-O-Trityl 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
acetaldehyde
75-07-0

acetaldehyde

riboflavin
83-88-5

riboflavin

5-ethyl-1,5-dihydroriboflavin
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%
4-vinylbenzaldehyde diethyl acetal
93429-66-4

4-vinylbenzaldehyde diethyl acetal

riboflavin
83-88-5

riboflavin

2',4'-p-vinylbenzylideneribo flavin

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%
benzaldehyde dimethyl acetal
1125-88-8

benzaldehyde dimethyl acetal

riboflavin
83-88-5

riboflavin

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
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

13C10/15N5-adenosine triphosphate

riboflavin
83-88-5

riboflavin

C17(13)C10H33N4(15)N5O15P2

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%
mono-4-methoxytrityl chloride
14470-28-1

mono-4-methoxytrityl chloride

riboflavin
83-88-5

riboflavin

C37H36N4O7

C37H36N4O7

Conditions
ConditionsYield
With pyridine at 100℃; Inert atmosphere;44%
[2,8-3H]ATP

[2,8-3H]ATP

riboflavin
83-88-5

riboflavin

C27H31(3)H2N9O15P2

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%
n-dodecanoyl chloride
112-16-3

n-dodecanoyl chloride

riboflavin
83-88-5

riboflavin

5'-lauric acid monoester of 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%
4,4'-dimethoxytrityl chloride
40615-36-9

4,4'-dimethoxytrityl chloride

riboflavin
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

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%
2,2,2-trichloroethyl butyrate
57392-44-6

2,2,2-trichloroethyl butyrate

riboflavin
83-88-5

riboflavin

riboflavin 5'-monobutyrate
20704-80-7

riboflavin 5'-monobutyrate

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 45℃; for 144h; subtilisin;25%
C28H36N10O15P4

C28H36N10O15P4

riboflavin
83-88-5

riboflavin

C31H39N9O14P2
740066-94-8

C31H39N9O14P2

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

butanoic acid anhydride

riboflavin
83-88-5

riboflavin

A

riboflavin 5'-monobutyrate
20704-80-7

riboflavin 5'-monobutyrate

B

riboflavin 2’,3’,4’,5’-tetrabutanoate
752-56-7

riboflavin 2’,3’,4’,5’-tetrabutanoate

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

palmitic anhydride

riboflavin
83-88-5

riboflavin

riboflavin-5'-monopalmitate
73130-89-9

riboflavin-5'-monopalmitate

Conditions
ConditionsYield
With pyridine at 120 - 140℃; for 3h;9.8%

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