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Cas Database |
| Name |
Ethyl L(-)-lactate |
EINECS | 211-694-1 |
| CAS No. | 687-47-8 | Density | 1.05 g/cm3 |
| PSA | 46.53000 | LogP | -0.06970 |
| Solubility | soluble in water | Melting Point |
-26 °C |
| Formula | C5H10O3 | Boiling Point | 154.5 °C at 760 mmHg |
| Molecular Weight | 118.133 | Flash Point | 54.6 °C |
| Transport Information | UN 1192 3/PG 3 | Appearance | clear liquid |
| Safety | 24-26-39 | Risk Codes | 10-37-41 |
| Molecular Structure |
|
Hazard Symbols |
 Xi, F
|
| Synonyms |
Lacticacid, ethyl ester, (-)- (8CI);Propanoic acid, 2-hydroxy-, ethyl ester, (S)-;(-)-Ethyl 2-hydroxypropanoate;(-)-Ethyl 2-hydroxypropionate;(-)-Ethyllactate;(2S)-2-Hydroxypropanoic acid ethyl ester;(2S)-2-Hydroxypropionic acidethyl ester;(L)-(-)-Ethyl lactate;(S)-(-)-Ethyl lactate;(S)-(-)-Lactic acidethyl ester;(S)-2-Hydroxypropanoic acid ethyl ester;(S)-Lactic acid ethylester;Ethyl (-)-(S)-lactate;Ethyl (2S)-(-)-2-hydroxypropanoate;Ethyl(2S)-2-hydroxypropanoate;Ethyl (S)-(-)-2-hydroxypropionate;Ethyl(S)-2-hydroxypropanoate;Ethyl (S)-2-hydroxypropionate;Ethyl (S)-lactate;Ethyl L-(-)-lactate;Ethyl L-lactate;L-Ethyl lactate;ethyl lactate green solvent grade;Ethyl L(-)-lactate; |
Article Data | 54 |
Ethyl L(-)-lactate Synthetic route
| Conditions | Yield |
|---|---|
| With hydrogen; Cinchonin In acetic acid at 25℃; under 7500.75 Torr; for 12h; Catalytic behavior; Pressure; Solvent; Time; Reagent/catalyst; enantioselective reaction; | 99.9% |
| In water keto reductase enzyme from bakers' yeast (YKER-I); | 79% |
| With Saccharomyces cerevisiae at 30℃; for 4h; pH=7; aq. buffer; optical yield given as %ee; enantioselective reaction; | 68% |
- 174417-26-6
ethyl (S)-2-tert-butoxypropanoate
- 687-47-8
(S)-Ethyl lactate
| Conditions | Yield |
|---|---|
| With sodium iodide; cerium(III) chloride In acetonitrile at 70℃; for 14h; | 95% |
| Conditions | Yield |
|---|---|
| With Ca[N(SiMe3)2]2*2THF In toluene at 30℃; for 0.166667h; | 92% |
- 64-17-5
ethanol
- 104196-77-2, 104264-83-7
(3S,5R,6R,9S)-3,9-Dimethyl-6-(1-methyl-1-phenyl-ethyl)-1,4-dioxa-spiro[4.5]decan-2-one
A
- 687-47-8
(S)-Ethyl lactate
B
- 97371-54-5
(-)-(2S,5R)-5-Methyl-2-(1-methyl-1-phenylethyl)cyclohexanon
| Conditions | Yield |
|---|---|
| With hydrogenchloride for 2h; Heating; | A 86% B n/a |
| Conditions | Yield |
|---|---|
| With toluene-4-sulfonic acid In toluene | 85% |
| With copper(II) sulfate | |
| With sulfuric acid; benzene durch azeotrope Destillation; |
- 73208-70-5
ethyl (2S)-2-(tetrahydropyran-2-yloxy)propionate
A
- 687-47-8
(S)-Ethyl lactate
B
- 76438-34-1
(S)-2-(tetrahydropyranyloxy)propanal
| Conditions | Yield |
|---|---|
| With diisobutylaluminium hydride In dichloromethane at -78℃; for 1h; | A 13% B 79.5% |
| Conditions | Yield |
|---|---|
| With hydrogen; cinchonidine In cyclohexane at 24.84℃; under 30003 Torr; optical yield given as %ee; enantioselective reaction; | A n/a B 76% |
| With D-Glucose; cliona varians In water at 25℃; for 72h; Reagent/catalyst; | A 49% B n/a |
| With hydrogen; cinchonine; Pt/Al2O3 In toluene at 20℃; under 15001.2 Torr; Rate constant; Product distribution; var. conc. of HCd, solvent; |
- 271244-06-5
(R)-2-[(R)-((R)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-(4-methoxy-phenyl)-methoxy]-propionic acid ethyl ester
- 687-47-8
(S)-Ethyl lactate
| Conditions | Yield |
|---|---|
| With ammonium cerium(IV) nitrate; water In acetonitrile Substitution; | 71% |
- 64-17-5
ethanol
- 13076-17-0
L,L-dilactide
A
- 687-47-8
(S)-Ethyl lactate
B
- 64231-47-6
(S)-2-hydroxy-propionic acid (S)- 1-ethoxycarbonyl-ethyl ester
| Conditions | Yield |
|---|---|
| With [Mg(tbpca)2] In dichloromethane at 25℃; for 72h; Inert atmosphere; chemoselective reaction; | A 30% B 70% |
| Conditions | Yield |
|---|---|
| With cesium fluoride In N,N-dimethyl-formamide at 10 - 15℃; for 24h; | 61% |
Ethyl L(-)-lactate Specification
The Ethyl L(-)-lactate with the CAS registry number 687-47-8, is also known as (S)-2-Hydroxypropanoic acid ethyl ester. It belongs to the product categories of Acetylgroup; Chiral Building Blocks; Esters (Chiral); Synthetic Organic Chemistry. Its EINECS number is 211-694-1. This chemical's molecular formula is C5H10O3 and molecular weight is 118.13. What's more, its systematic name is ethyl (2S)-2-hydroxypropanoate. Its classification code is TSCA Flag P [A commenced PMN (Premanufacture Notice) substance]. It should be sealed and stored in a cool and dry place. Moreover, it should be protected from oxides and fire. It can be prepared by lactic acid and excessive ethanol with the solvent sulfuric acid in the condition of heating and refluxing for several hours. It is used as food aromatizing agent, wine flavouring agent and pharmaceutical intermediate.
Physical properties of Ethyl L(-)-lactate are: (1)ACD/LogP: -0.039; (2)ACD/LogD (pH 5.5): -0.04; (3)ACD/LogD (pH 7.4): -0.04; (4)ACD/BCF (pH 5.5): 1.00; (5)ACD/BCF (pH 7.4): 1.00; (6)ACD/KOC (pH 5.5): 22.68; (7)ACD/KOC (pH 7.4): 22.68; (8)#H bond acceptors: 3; (9)#H bond donors: 1; (10)#Freely Rotating Bonds: 4; (11)Index of Refraction: 1.42; (12)Molar Refractivity: 28.482 cm3; (13)Molar Volume: 112.434 cm3; (14)Polarizability: 11.291 10-24cm3; (15)Surface Tension: 33.2179985046387 dyne/cm; (16)Density: 1.051 g/cm3; (17)Flash Point: 54.62 °C; (18)Enthalpy of Vaporization: 45.572 kJ/mol; (19)Boiling Point: 154.499 °C at 760 mmHg; (20)Vapour Pressure: 1.16299998760223 mmHg at 25°
When you are using this chemical, please be cautious about it as the following:
This chemical is flammable. It is irritating to respiratory system. It has a risk of serious damage to eyes. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you must avoid contact with skin and need wear eye/face protection.
You can still convert the following datas into molecular structure:
(1)SMILES: O=C(OCC)[C@@H](O)C
(2)Std. InChI: InChI=1S/C5H10O3/c1-3-8-5(7)4(2)6/h4,6H,3H2,1-2H3/t4-/m0/s1
(3)Std. InChIKey: LZCLXQDLBQLTDK-BYPYZUCNSA-N
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