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79-33-4

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79-33-4 Usage

Chemical Properties

Crystalline Solid

Uses

Different sources of media describe the Uses of 79-33-4 differently. You can refer to the following data:
1. Occurs in small quantities in the blood and muscle fluid of man and animals. The lactic acid concentration increases in muscle and blood after vigorous activity. L-(+)-Lactic acid is also present in liver, kidney, thymus gland, human amniotic fluid, and o
2. It is most commonly used for fluid resuscitation after blood loss due to trauma, surgery, or burn injury. It is used in the agricultural, chemical, leather processing, pharmaceuticals, and cosmetics industries, used as an electroplating agent, food/feed additive, pH regulator, cleaning/washing agent, and tanning agent; used to flavor animal feeds; used as a solvent and intermediate in chemical production, as a pH regulator in fabric finishing, and in paints, coatings, soaps, and cleaning products; used to make large scale and fine chemicals, pulp-paper-paper products, food products, and plastic products, in mining, health services, agriculture-forestry-fishing, and building and construction work.
3. Lactic acid has been used:as a component in substrate solution II for lactate dehydrogenase reactionas an additive in storage solution Aas a supplement in the artificial gastric juice preparation for evaluation of degree of resistance Lactobacillus to the gastric stresses

Definition

ChEBI: An optically active form of lactic acid having (S)-configuration.

General Description

L-(+)-Lactic acid is the only naturally occurring lactic acid in humans and mammals. Commercially, few bacteria like Lactobacillus casei, L. delbrueckii, Streptococcus lactis produces L-Lactic acid by fermentation process. Lactic acid activates hydroxycarboxylic acid receptor, G-protein coupled receptor 81 (GPR81).

Flammability and Explosibility

Notclassified

Biochem/physiol Actions

L-(+)-Lactic acid is used as a substrate for lactic acid dehydrogenase and lactate oxidase.

Purification Methods

Purify lactic acid by fractional distillation at 0.1mm pressure, followed by fractional crystallisation from diethyl ether/isopropyl ether (1:1, dried with sodium). [Borsook et al. J Biol Chem 102 449 1933.] The solvent mixture, *benzene/diethyl ether (1:1) containing 5% pet ether (b 60-80o) has also been used. [Brin Biochemical Preparations 3 61 1953, Beilstein 3 IV 633.]

Check Digit Verification of cas no

The CAS Registry Mumber 79-33-4 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 7 and 9 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 79-33:
(4*7)+(3*9)+(2*3)+(1*3)=64
64 % 10 = 4
So 79-33-4 is a valid CAS Registry Number.
InChI:InChI=1/C3H6O3/c1-2(4)3(5)6/h2,4H,1H3,(H,5,6)/t2-/m0/s1

79-33-4 Well-known Company Product Price

  • Brand
  • (Code)Product description
  • CAS number
  • Packaging
  • Price
  • Detail
  • TCI America

  • (L0165)  L-Lactic Acid  >85.0%(T)

  • 79-33-4

  • 25g

  • 190.00CNY

  • Detail
  • TCI America

  • (L0165)  L-Lactic Acid  >85.0%(T)

  • 79-33-4

  • 500g

  • 485.00CNY

  • Detail
  • Alfa Aesar

  • (L13242)  L-Lactic acid, anhydrous, 98%   

  • 79-33-4

  • 5g

  • 498.0CNY

  • Detail
  • Alfa Aesar

  • (L13242)  L-Lactic acid, anhydrous, 98%   

  • 79-33-4

  • 25g

  • 1901.0CNY

  • Detail
  • Alfa Aesar

  • (L13242)  L-Lactic acid, anhydrous, 98%   

  • 79-33-4

  • 100g

  • 5080.0CNY

  • Detail
  • Alfa Aesar

  • (A17268)  L-(+)-Lactic acid, ca 85-90% aq. soln.   

  • 79-33-4

  • 100g

  • 249.0CNY

  • Detail
  • Alfa Aesar

  • (A17268)  L-(+)-Lactic acid, ca 85-90% aq. soln.   

  • 79-33-4

  • 500g

  • 616.0CNY

  • Detail
  • Alfa Aesar

  • (A17268)  L-(+)-Lactic acid, ca 85-90% aq. soln.   

  • 79-33-4

  • 2500g

  • 2290.0CNY

  • Detail
  • Fluka

  • (35202)  L-(+)-Lacticacidsolution  volumetric, 1 M C3H6O3 (1N)

  • 79-33-4

  • 35202-1L

  • 985.14CNY

  • Detail
  • Vetec

  • (V900016)  L-(+)-Lacticacid  Vetec reagent grade, 86%

  • 79-33-4

  • V900016-100G

  • 225.35CNY

  • Detail
  • Vetec

  • (V900016)  L-(+)-Lacticacid  Vetec reagent grade, 86%

  • 79-33-4

  • V900016-500G

  • 407.32CNY

  • Detail
  • Sigma-Aldrich

  • (27715)  L-(+)-Lacticacid  80%

  • 79-33-4

  • 27715-1L-R

  • 522.99CNY

  • Detail

79-33-4SDS

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 (S)-lactic acid

1.2 Other means of identification

Product number -
Other names Propanoic acid, 2-hydroxy-, (S)-

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Antimicrobial Actives;Chelating Agents;Preservatives and Antioxidants;Processing Aids and Additives
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:79-33-4 SDS

79-33-4Synthetic route

methyl lactate
547-64-8

methyl lactate

A

L-Lactic acid
79-33-4

L-Lactic acid

B

(R)-Methyl lactate
17392-83-5

(R)-Methyl lactate

Conditions
ConditionsYield
With marine microbial esterase In aq. phosphate buffer at 37℃; for 1h; pH=7.5; pH-value; Temperature; Solvent; Reagent/catalyst; Time; Resolution of racemate; Enzymatic reaction; enantioselective reaction;A n/a
B 98%
With water; Candida rugosa lipase In aq. phosphate buffer at 45℃; for 8h; pH=7.2; Enzymatic reaction; enantioselective reaction;A n/a
B n/a
D-glucose
50-99-7

D-glucose

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
With Candida utilis NBRC0988 Cupdc1Δ4-LDH2 mutant at 35℃; for 33h; Microbiological reaction;95.1%
bei der Vergaerung durch Streptococcus lactis unter verschiedenen Bedingungen;
With Sn-beta catalyst In water at 200℃; under 30003 Torr; for 0.5h; Catalytic behavior; Solvent; Inert atmosphere; Autoclave; Green chemistry;
methanol
67-56-1

methanol

A

L-Lactic acid
79-33-4

L-Lactic acid

B

(1-methoxy-1-oxopropane-2-yl)-2-hydroxypropionate

(1-methoxy-1-oxopropane-2-yl)-2-hydroxypropionate

Conditions
ConditionsYield
With C11H19AlN2 In dichloromethane at 20℃; for 24h; Reagent/catalyst; Schlenk technique;A n/a
B 89%
(S)-Methyl lactate
27871-49-4

(S)-Methyl lactate

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
With lithium hydroxide monohydrate In tetrahydrofuran; water at 0 - 20℃; for 48h; Inert atmosphere;80%
With lithium hydroxide In methanol at 20℃;
With water at 100℃; for 6h; Product distribution / selectivity;
With water; Amberlyst-36 at 100℃; for 1h;
With water at 100℃; for 1h;7 g
(S)-2-Hydroxy-1-((S)-2-methoxymethyl-2,3-dihydro-indol-1-yl)-propan-1-one

(S)-2-Hydroxy-1-((S)-2-methoxymethyl-2,3-dihydro-indol-1-yl)-propan-1-one

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
With hydrogenchloride In 1,4-dioxane for 3h; Heating;73%
methanol
67-56-1

methanol

(2S)-2-(hydroxymethyl)-1-[(2R)-2-hydroxypropanoyl]pyrrolidine
170945-09-2

(2S)-2-(hydroxymethyl)-1-[(2R)-2-hydroxypropanoyl]pyrrolidine

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
With sulfuric acid Heating;71%
L-alanin
56-41-7

L-alanin

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
With sulfuric acid; sodium nitrite In water at 0℃; for 12h;65%
With tert.-butylnitrite In 1,4-dioxane; water at 20℃; for 1h; Inert atmosphere;58%
bei der Einw. von Oidium lactis;
carbon dioxide
124-38-9

carbon dioxide

acetaldehyde
75-07-0

acetaldehyde

A

L-Lactic acid
79-33-4

L-Lactic acid

B

2-oxo-propionic acid
127-17-3

2-oxo-propionic acid

Conditions
ConditionsYield
With pyruvate decarboxylase; thiamine pyrophosphate; L-lactic dehydrogenase; 1,4-dihydronicotinamide adenine dinucleotide for 1h; pH=9.5; Enzymatic reaction;A 51%
B 14%
With pyruvate decarboxylase; thiamine pyrophosphate; L-lactic dehydrogenase; 1,4-dihydronicotinamide adenine dinucleotide for 1h; pH=10.5; Enzymatic reaction;A 27%
B 28%
sodium pyruvate
113-24-6

sodium pyruvate

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
With Fructose 1,6-bisphosphate; piperazine*HCl buffer; sodium formate; nicotinamide adenine dinucleotide; diothiothreitol pH 6.0, lyophilized formate dehydrogenase, lactate dehydrogenase from Bacillus stearothermophilus (BSLDH Q102R/C97G);45%
With lipoamide; DTTox; NAD; xanthin; PAN gel Electrochemically, Enzymatic, 3.5 d; Multistep reaction;
ethyl 2-hydroxypropionate
97-64-3, 2676-33-7

ethyl 2-hydroxypropionate

A

L-Lactic acid
79-33-4

L-Lactic acid

B

D-Lactic acid
10326-41-7

D-Lactic acid

C

(R)-Ethyl lactate
7699-00-5

(R)-Ethyl lactate

Conditions
ConditionsYield
With ammonium hydroxide at 30℃; pH=6.9;A n/a
B n/a
C 34.5%
D-glucose
50-99-7

D-glucose

A

formic acid
64-18-6

formic acid

B

glycolic Acid
79-14-1

glycolic Acid

C

L-Lactic acid
79-33-4

L-Lactic acid

D

malonic acid
141-82-2

malonic acid

E

succinic acid
110-15-6

succinic acid

F

oxalic acid
144-62-7

oxalic acid

G

acetic acid
64-19-7

acetic acid

H

propionic acid
802294-64-0

propionic acid

I

2-oxo-propionic acid
127-17-3

2-oxo-propionic acid

J

maleic acid
110-16-7

maleic acid

Conditions
ConditionsYield
With sodium silicate; water at 300℃; under 64356.4 Torr; for 0.0166667h; Reagent/catalyst; Sealed tube;A n/a
B n/a
C 30%
D n/a
E n/a
F n/a
G n/a
H n/a
I n/a
J n/a
D-glucose
50-99-7

D-glucose

A

5-hydroxymethyl-2-furfuraldehyde
67-47-0

5-hydroxymethyl-2-furfuraldehyde

B

formic acid
64-18-6

formic acid

C

L-Lactic acid
79-33-4

L-Lactic acid

D

succinic acid
110-15-6

succinic acid

E

oxalic acid
144-62-7

oxalic acid

F

acetic acid
64-19-7

acetic acid

G

propionic acid
802294-64-0

propionic acid

H

2-oxo-propionic acid
127-17-3

2-oxo-propionic acid

I

maleic acid
110-16-7

maleic acid

Conditions
ConditionsYield
With water at 300℃; under 64356.4 Torr; for 0.0166667h; Reagent/catalyst; Sealed tube;A n/a
B n/a
C 30%
D n/a
E n/a
F n/a
G n/a
H n/a
I n/a
citric acid
77-92-9

citric acid

A

Oxalacetic acid
328-42-7

Oxalacetic acid

B

L-Lactic acid
79-33-4

L-Lactic acid

C

D-Lactic acid
10326-41-7

D-Lactic acid

D

3-hydroxy-2-butanon
513-86-0, 52217-02-4

3-hydroxy-2-butanon

E

acetic acid
64-19-7

acetic acid

F

2-oxo-propionic acid
127-17-3

2-oxo-propionic acid

Conditions
ConditionsYield
With Leuconostoc mesenteroides at 30℃; for 1h; potassium phosphate buffer, pH 5.0; other conditions also investigated; several substrates investigated;A 0.66%
B 0.06%
C 1.77%
D 6.86%
E 15.5%
F 0.05%
citric acid
77-92-9

citric acid

A

Oxalacetic acid
328-42-7

Oxalacetic acid

B

L-Lactic acid
79-33-4

L-Lactic acid

C

D-Lactic acid
10326-41-7

D-Lactic acid

D

acetic acid
64-19-7

acetic acid

E

2-oxo-propionic acid
127-17-3

2-oxo-propionic acid

F

dimethylglyoxal
431-03-8

dimethylglyoxal

Conditions
ConditionsYield
With Leuconostoc mesenteroides at 30℃; for 1h; potassium phosphate buffer, pH 5.0; other conditions also investigated; several substrates investigated;A 0.66%
B 0.06%
C 1.77%
D 15.5%
E 0.05%
F 1.72%
D-Alanine
338-69-2

D-Alanine

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
bei der Einw. von Oidium lactis;
With cis-nitrous acid
rac-Ala-OH
302-72-7

rac-Ala-OH

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
bei der Einw. von Oidium lactis;
LACTIC ACID
849585-22-4

LACTIC ACID

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
durch Spaltung mit Morphin;
mit Hilfe von Strychnin;
mit Hilfe von Chinin;
mit Hilfe von Morphin;
(S)-2-bromopropanoic acid
32644-15-8

(S)-2-bromopropanoic acid

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
With water; silver carbonate
R-(+)-2-bromopropionic acid
10009-70-8

R-(+)-2-bromopropionic acid

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
With potassium hydroxide
Glyceraldehyde
56-82-6

Glyceraldehyde

A

LACTIC ACID
849585-22-4

LACTIC ACID

B

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
durch Einw. roter Blutkoerperchen;
D-galactitol
608-66-2

D-galactitol

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
bei der Einwirkung von Bacterium coli commune;
2-amino-2-deoxyglucose
3416-24-8

2-amino-2-deoxyglucose

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
bei der Einw. von Bact. coli;
2-amino-2-deoxyglucose
3416-24-8

2-amino-2-deoxyglucose

A

L-Lactic acid
79-33-4

L-Lactic acid

B

propionic acid
802294-64-0

propionic acid

Conditions
ConditionsYield
beim Abbau durch Faeulnis-Bakterien;
D-glucose
50-99-7

D-glucose

A

LACTIC ACID
849585-22-4

LACTIC ACID

B

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
bei der Vergaerung durch Lactobacillus Nr.S 48a, 3;
bei der Vergaerung durch Lactobacillus Nr.S 48a,3;
D-Galactose
59-23-4

D-Galactose

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
Bacillus paralacticus erzeugt;
fructose-1,6-bisphosphate
488-69-7

fructose-1,6-bisphosphate

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
With GLUTATHIONE; toluene durch Colibakterien;
dihydroxyacetone
96-26-4

dihydroxyacetone

A

LACTIC ACID
849585-22-4

LACTIC ACID

B

L-Lactic acid
79-33-4

L-Lactic acid

Conditions
ConditionsYield
durch Einw. roter Blutkoerperchen;
3,5-diamino-6-chloro-N-(N-((R)-11-((R)-2-(3-formamido-4-hydroxyphenyl)-2-hydroxyethylamino)dodecyl)carbamimidoyl)pyrazine-2-carboxamide

3,5-diamino-6-chloro-N-(N-((R)-11-((R)-2-(3-formamido-4-hydroxyphenyl)-2-hydroxyethylamino)dodecyl)carbamimidoyl)pyrazine-2-carboxamide

L-Lactic acid
79-33-4

L-Lactic acid

3,5-diamino-6-chloro-N-(N-((R)-11-(R)-2-((3-formamido-4-hydroxyphenyl)-2-hydroxyethylamino)dodecyl)carbamimidoyl)pyrazine-2-carboxamide di-L-lactate

3,5-diamino-6-chloro-N-(N-((R)-11-(R)-2-((3-formamido-4-hydroxyphenyl)-2-hydroxyethylamino)dodecyl)carbamimidoyl)pyrazine-2-carboxamide di-L-lactate

Conditions
ConditionsYield
In ethanol at 20℃; for 1h;100%
(R)-3,5-diamino-N-(N-(4-(4-(2-(3-(2-(4-(benzyloxy)-3-formamidophenyl)-2-hydroxyethylamino)butylamino)-2-oxoethoxy)phenyl)butyl)carbamimidoyl)-6-chloropyrazine-2-carboxamide

(R)-3,5-diamino-N-(N-(4-(4-(2-(3-(2-(4-(benzyloxy)-3-formamidophenyl)-2-hydroxyethylamino)butylamino)-2-oxoethoxy)phenyl)butyl)carbamimidoyl)-6-chloropyrazine-2-carboxamide

L-Lactic acid
79-33-4

L-Lactic acid

(R)-3,5-diamino-N-(N-(4-(4-(2-(3-(2-(4-(benzyloxy)-3-formamidophenyl)-2-hydroxyethylamino)butylamino)-2-oxoethoxy)phenyl)butyl)carbamimidoyl)-6-chloropyrazine-2-carboxamide di-L-lactate

(R)-3,5-diamino-N-(N-(4-(4-(2-(3-(2-(4-(benzyloxy)-3-formamidophenyl)-2-hydroxyethylamino)butylamino)-2-oxoethoxy)phenyl)butyl)carbamimidoyl)-6-chloropyrazine-2-carboxamide di-L-lactate

Conditions
ConditionsYield
In ethanol at 20℃; for 2h;100%
(S)-3-amino-1-cyclopropyl-5-methyl-1,3,4,5-tetrahydro-benzo[b][1,4]diazepin-2-one

(S)-3-amino-1-cyclopropyl-5-methyl-1,3,4,5-tetrahydro-benzo[b][1,4]diazepin-2-one

L-Lactic acid
79-33-4

L-Lactic acid

(S)-N-((S)-1-cyclopropylmethyl-5-methyl-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-yl)-2-hydroxy-propionamide

(S)-N-((S)-1-cyclopropylmethyl-5-methyl-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-yl)-2-hydroxy-propionamide

Conditions
ConditionsYield
With 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride; benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine In tetrahydrofuran at 0 - 20℃;100%
L-Lactic acid
79-33-4

L-Lactic acid

1,3-dibutyl-5,6-dimethylbenzimidazolium iodide
1382354-48-4

1,3-dibutyl-5,6-dimethylbenzimidazolium iodide

C3H5O3(1-)*C17H27N2(1+)
1382354-58-6

C3H5O3(1-)*C17H27N2(1+)

Conditions
ConditionsYield
Stage #1: L-Lactic acid With Amberlyst A-26 (OH- form) In methanol; water at 20℃;
Stage #2: 1,3-dibutyl-5,6-dimethylbenzimidazolium iodide In methanol
100%
L-Lactic acid
79-33-4

L-Lactic acid

1-butyl-4-methylpyridin-1-ium iodide
32353-64-3

1-butyl-4-methylpyridin-1-ium iodide

1-butyl-4-methylpyridinium lactate
1289675-20-2

1-butyl-4-methylpyridinium lactate

Conditions
ConditionsYield
Stage #1: L-Lactic acid With Amberlyst A-26 (OH- form) In methanol; water at 20℃;
Stage #2: 1-butyl-4-methylpyridin-1-ium iodide In methanol
100%
L-Lactic acid
79-33-4

L-Lactic acid

choline iodide
17773-10-3

choline iodide

2-hydroxyethyl-trimethylammonium L-Lactate
888724-51-4

2-hydroxyethyl-trimethylammonium L-Lactate

Conditions
ConditionsYield
Stage #1: L-Lactic acid With Amberlyst A-26 (OH- form) In methanol; water at 20℃;
Stage #2: choline iodide In methanol
100%
L-Lactic acid
79-33-4

L-Lactic acid

1,3-dimethylimidazolim iodide
4333-62-4

1,3-dimethylimidazolim iodide

[mmim](S)-lactate
1382354-64-4

[mmim](S)-lactate

Conditions
ConditionsYield
Stage #1: L-Lactic acid With Amberlyst A-26 (OH- form) In methanol; water at 20℃;
Stage #2: 1,3-dimethylimidazolim iodide In methanol
100%
L-Lactic acid
79-33-4

L-Lactic acid

1-methyl-3-(n-butyl)imidazolium iodide
65039-05-6

1-methyl-3-(n-butyl)imidazolium iodide

[bmim][(S)-lactate]
878132-20-8

[bmim][(S)-lactate]

Conditions
ConditionsYield
Stage #1: L-Lactic acid With Amberlyst A-26 (OH- form) In methanol; water at 20℃;
Stage #2: 1-methyl-3-(n-butyl)imidazolium iodide In methanol
100%
L-Lactic acid
79-33-4

L-Lactic acid

1,3-bis(n-butyl)imidazolium iodide
143085-46-5

1,3-bis(n-butyl)imidazolium iodide

C3H5O3(1-)*C11H21N2(1+)
888320-03-4

C3H5O3(1-)*C11H21N2(1+)

Conditions
ConditionsYield
Stage #1: L-Lactic acid With Amberlyst A-26 (OH- form) In methanol; water at 20℃;
Stage #2: 1,3-dibutyl-1,3-imidazolium iodide In methanol
100%
L-Lactic acid
79-33-4

L-Lactic acid

1-butyl-2,3-dimethylimidazolium bromide

1-butyl-2,3-dimethylimidazolium bromide

1-butyl-2,3-dimethylimidazolium lactate
1289675-17-7

1-butyl-2,3-dimethylimidazolium lactate

Conditions
ConditionsYield
Stage #1: L-Lactic acid With Amberlyst A-26 (OH- form) In methanol; water at 20℃;
Stage #2: 1-butyl-2,3-dimethylimidazolium bromide In methanol
100%
L-Lactic acid
79-33-4

L-Lactic acid

Boc-Phe-ONSu
3674-06-4

Boc-Phe-ONSu

(S)-2-(((S)-2-((tert-butoxycarbonyl)amino)-3-phenylpropanoyl)oxy)propanoic acid

(S)-2-(((S)-2-((tert-butoxycarbonyl)amino)-3-phenylpropanoyl)oxy)propanoic acid

Conditions
ConditionsYield
With pyridine; dmap In tetrahydrofuran at 80℃; for 24h; Inert atmosphere;100%
L-Lactic acid
79-33-4

L-Lactic acid

L-Tartaric acid
87-69-4

L-Tartaric acid

L-thyroxine
51-48-9

L-thyroxine

C4H6O6*C15H11I4NO4*C3H6O3

C4H6O6*C15H11I4NO4*C3H6O3

Conditions
ConditionsYield
at 10 - 20℃; for 168h;99.5%
L-Lactic acid
79-33-4

L-Lactic acid

(2R)-propane-1,2-diol
4254-14-2

(2R)-propane-1,2-diol

Conditions
ConditionsYield
With ruthenium-carbon composite; hydrogen In water at 79.84℃; under 60006 Torr; for 4h; Catalytic behavior; Reagent/catalyst; Autoclave; Sealed tube;99%
L-Lactic acid
79-33-4

L-Lactic acid

(S)-2,5-dioxopyrrolidin-1-yl 2-(2,2-dimethyl-5-oxo-1,3-dioxolan-4-yl)acetate

(S)-2,5-dioxopyrrolidin-1-yl 2-(2,2-dimethyl-5-oxo-1,3-dioxolan-4-yl)acetate

(S)-2-(2-((S)-2,2-dimethyl-5-oxo-1,3-dioxolan-4-yl)acetoxy)propanoic acid

(S)-2-(2-((S)-2,2-dimethyl-5-oxo-1,3-dioxolan-4-yl)acetoxy)propanoic acid

Conditions
ConditionsYield
With pyridine; dmap In tetrahydrofuran at 60℃; for 72h; Temperature;99%
Boc-Leu-ONSu
3392-09-4

Boc-Leu-ONSu

L-Lactic acid
79-33-4

L-Lactic acid

(S)-2-(((S)-2-((tert-butoxycarbonyl)amino)-4-methylpentanoyl)oxy)propanoic acid

(S)-2-(((S)-2-((tert-butoxycarbonyl)amino)-4-methylpentanoyl)oxy)propanoic acid

Conditions
ConditionsYield
With pyridine; dmap In tetrahydrofuran at 80℃; for 24h; Inert atmosphere;99%
L-Lactic acid
79-33-4

L-Lactic acid

5,5-difluoro-10-mesityl-1,3,7,9-tetramethyl-5H-4λ4,5λ4-dipyrrolo[1,2-c:2',1'-f][1,3,2]diazaborinine
1308671-66-0

5,5-difluoro-10-mesityl-1,3,7,9-tetramethyl-5H-4λ4,5λ4-dipyrrolo[1,2-c:2',1'-f][1,3,2]diazaborinine

C25H29BN2O3

C25H29BN2O3

Conditions
ConditionsYield
With chloro-trimethyl-silane In acetonitrile at 120℃; for 0.5h; Microwave irradiation;99%
L-Lactic acid
79-33-4

L-Lactic acid

8-mesityl-4,4-difluoro-4-bora-3a,4a-diaza-s-indacene
870753-29-0

8-mesityl-4,4-difluoro-4-bora-3a,4a-diaza-s-indacene

C21H21BN2O3

C21H21BN2O3

Conditions
ConditionsYield
With chloro-trimethyl-silane In acetonitrile at 120℃; for 7h; Microwave irradiation;99%
L-Lactic acid
79-33-4

L-Lactic acid

acetyl chloride
75-36-5

acetyl chloride

(S)-2-acetoxypropionic acid
535-17-1, 3853-80-3, 18668-00-3, 6034-46-4

(S)-2-acetoxypropionic acid

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 2h;98%
With acetic acid at 0 - 20℃;92%
With acetic acid90%
(S)-7-amino-5-(2-benzyloxy-ethyl)-5H,7H-dibenzo[b,d]azepin-6-one

(S)-7-amino-5-(2-benzyloxy-ethyl)-5H,7H-dibenzo[b,d]azepin-6-one

L-Lactic acid
79-33-4

L-Lactic acid

(S)-N-[(S)-5-(2-benzyloxy-ethyl)-6-oxo-6,7-dihydro-5H-dibenzo[b,d]azepin-7-yl]-2-hydroxy-propionamide

(S)-N-[(S)-5-(2-benzyloxy-ethyl)-6-oxo-6,7-dihydro-5H-dibenzo[b,d]azepin-7-yl]-2-hydroxy-propionamide

Conditions
ConditionsYield
Stage #1: (S)-7-amino-5-(2-benzyloxy-ethyl)-5H,7H-dibenzo[b,d]azepin-6-one; L-Lactic acid With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In tetrahydrofuran at 0 - 20℃; for 3.5h;
Stage #2: With hydrogenchloride In water
98%
L-Lactic acid
79-33-4

L-Lactic acid

cholin hydroxide
123-41-1

cholin hydroxide

2-hydroxyethyl-trimethylammonium L-Lactate
888724-51-4

2-hydroxyethyl-trimethylammonium L-Lactate

Conditions
ConditionsYield
In methanol at 20℃; Cooling with ice;98%
In ethanol at 20℃; for 1h;
4-Fluorophenol
371-41-5

4-Fluorophenol

L-Lactic acid
79-33-4

L-Lactic acid

(R)-ethyl 2-(4-fluorophenoxy)propionate
103196-99-2

(R)-ethyl 2-(4-fluorophenoxy)propionate

Conditions
ConditionsYield
With di-isopropyl azodicarboxylate; triphenylphosphine In tetrahydrofuran at -5 - 20℃; Inert atmosphere;98%
L-Lactic acid
79-33-4

L-Lactic acid

1,3-bis(mesityl)imidazolium chloride
141556-45-8

1,3-bis(mesityl)imidazolium chloride

C3H5O3(1-)*C21H25N2(1+)
1382354-83-7

C3H5O3(1-)*C21H25N2(1+)

Conditions
ConditionsYield
Stage #1: L-Lactic acid With Amberlyst A-26 (OH- form) In methanol; water at 20℃;
Stage #2: 1,3-bis(mesityl)imidazolium chloride In methanol
98%
L-Lactic acid
79-33-4

L-Lactic acid

tetra(n-butyl)ammonium hydroxide
2052-49-5

tetra(n-butyl)ammonium hydroxide

tetrabutylammonium (S)-lactate

tetrabutylammonium (S)-lactate

Conditions
ConditionsYield
In water at 100℃; for 24h;97%
L-Lactic acid
79-33-4

L-Lactic acid

propan-1-ol
71-23-8

propan-1-ol

Conditions
ConditionsYield
With hydrogen In water at 119.84℃; under 60006 Torr; for 2h; Catalytic behavior; Reagent/catalyst; Autoclave; Sealed tube;97%
L-Lactic acid
79-33-4

L-Lactic acid

tetrabutylammomium bromide
1643-19-2

tetrabutylammomium bromide

tetrabutylammonium (S)-lactate

tetrabutylammonium (S)-lactate

Conditions
ConditionsYield
With silver hydroxide In water for 24h;96%
L-Lactic acid
79-33-4

L-Lactic acid

aniline
62-53-3

aniline

1-anilino-propan-2-ol
3233-06-5

1-anilino-propan-2-ol

Conditions
ConditionsYield
With cobalt(II) tetrafluoroborate hexahydrate; (p-anisyl)triphos; hydrogen In 1,4-dioxane at 140℃; under 15001.5 Torr; for 24h; Autoclave; Green chemistry;96%
L-Lactic acid
79-33-4

L-Lactic acid

2,3,4,5,6-pentamethylbenzyl chloride
484-65-1

2,3,4,5,6-pentamethylbenzyl chloride

L-lactic acid pentamethylbenzyl ester
140387-57-1

L-lactic acid pentamethylbenzyl ester

Conditions
ConditionsYield
With TEA In N,N-dimethyl-formamide Ambient temperature;95%
With TEA In N,N-dimethyl-formamide at 50℃; for 2h; Alkylation;63%
L-Lactic acid
79-33-4

L-Lactic acid

Nps-Glu(OEt) NCA
114498-16-7

Nps-Glu(OEt) NCA

Nps-Glu(OEt)-Lac-OH
116950-31-3

Nps-Glu(OEt)-Lac-OH

Conditions
ConditionsYield
With pyridine In tetrahydrofuran for 3h; Ambient temperature;95%

79-33-4Relevant articles and documents

γ-Valerolactone-introduced controlled-isomerization of glucose for lactic acid production over an Sn-Beta catalyst

Zhao, Xinpeng,Zhou, Zhimin,Luo, Hu,Zhang, Yanfei,Liu, Wang,Miao, Gai,Zhu, Lijun,Kong, Lingzhao,Li, Shenggang,Sun, Yuhan

supporting information, p. 2634 - 2639 (2021/04/22)

Combined experiments and density functional theory (DFT) calculations provided insights into the role of environment-friendly γ-valerolactone (GVL) as a solvent in the hydrothermal conversion of glucose into lactic acid (LA) over the post-synthesized Sn-Beta catalyst. By introducing 2.0 wt% GVL, a much higher yield of LA (72.0 wt%) was obtained than that in pure water (60.1 wt%) at 200 °C, 4 MPa N2, and 30 min in a batch reactor. The GVL effectively suppressed the isomerization of glucose into fructose in a controlled-transfer mode, resulting in a lower fructose concentration. Thermogravimetry-differential analysis and DFT calculations demonstrated that the competitive adsorption between GVL and glucose happened at the open Sn sites over the Sn-Beta catalyst, which led to a controlled isomerization rate in water. Further increasing the content of GVL to 20.0 wt%, the higher yield of LA (74.0 wt%) was attributed to the more efficient competitive adsorption while also inhibiting carbon deposition.

METHODS FOR SYNTHESIZING ANHYDROUS LACTIC ACID

-

Paragraph 0038; 0056, (2021/11/13)

A method of synthesizing anhydrous lactic acid is provided by reacting a compound of formula (Ia): with an acid compound of formula HnX in a first solvent to produce a reaction mixture comprising a compound of formula (Ib) and a lactic acid compound of formula (I) in solution with the first solvent and/or water. n is an integer other than 0, x is 0, or an integer other than 0, M is an alkali metal or alkaline earth metal and X is the conjugate base of the acid compound of formula HnX. The resulting reaction mixture is filtered to produce a filtrate containing lactic acid in solution. The filtrate is crystalized from a second solvent to produce anhydrous lactic acid.

Epimerization-suppressed organocatalytic synthesis of poly-L-lactide in supercritical carbon dioxide under plasticizing conditions

Mase, Nobuyuki,Moniruzzaman,Yamamoto,Sato,Narumi, Tetsuo,Yanai, Hikaru

supporting information, (2019/08/06)

Herein, an efficient (>95% yield, >99.0% ee) Br?nsted acid-catalyzed synthetic method of poly-L-lactide (PLLA) in supercritical carbon dioxide (scCO2) under plasticizing conditions is presented. High-performance liquid chromatography analysis of the PLLA hydrolysis products indicated that, as opposed to the case of organic solvents, the use of a nucleophilic catalyst in scCO2 suppressed the epimerization. The highly stereochemically pure PLLA prepared by the developed method under metal-free conditions meets the criteria of medicinal/engineering applications.

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