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Sigma-Aldrich

(−)-Methyl L-lactate

greener alternative

98%, optical purity ee: 97% (GLC)

Synonym(s):

Methyl (S)-(−)-lactate

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5 G
$37.50
100 G
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About This Item

Linear Formula:
CH3CH(OH)CO2CH3
CAS Number:
27871-49-4
Molecular Weight:
104.10
Beilstein/REAXYS Number:
1720587
EC Number:
248-704-9
MDL number:
MFCD00064265
UNSPSC Code:
12352108
PubChem Substance ID:
24853796
NACRES:
NA.22

$37.50

Available to ship onApril 29, 2025Details

Request a Bulk Order

Quality Level

100

assay

98%

form

liquid

optical activity

[α]18/D −8.1°, neat

optical purity

ee: 97% (GLC)

greener alternative product characteristics

Safer Solvents and Auxiliaries
Learn more about the Principles of Green Chemistry.

sustainability

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refractive index

n20/D 1.413 (lit.)

bp

144-145 °C (lit.)

density

1.09 g/mL at 25 °C (lit.)

functional group

ester
hydroxyl

greener alternative category

Aligned,

SMILES string

COC(=O)[C@H](C)O

InChI

1S/C4H8O3/c1-3(5)4(6)7-2/h3,5H,1-2H3/t3-/m0/s1

InChI key

LPEKGGXMPWTOCB-VKHMYHEASA-N

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General description

(-)-Methyl L-lactate can be used as a chiral auxiliary during the synthesis of Bao Gong Teng A, an antiglaucoma compound.[1]
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Green Chemistry.This compound has benign qualities and is biodegradable, water miscible, and functions as a versatile solvent for CA membrane preparation. This is also used as an intermediate for the production of other chemicals, polymers, and derivatives. Thus this product has been enhanced for Safer solvents and auxiliaries. Click here for more information.

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FlameExclamation mark
GHS02,GHS07

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Warning

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 3 - STOT SE 3

target_organs

Respiratory system

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

120.2 °F - closed cup

flash_point_c

49 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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Certificates of Analysis (COA)

Lot/Batch Number
STBL2521
STBK8915
STBK2882
STBJ1541
STBH8221

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Methyl (S)-lactate as a chiral auxiliary in the asymmetric synthesis of Bao Gong Teng A.
Pham VC and Charlton JL.
The Journal of Organic Chemistry, 60(24), 8051-8055 (1995)
Philipp Zielke et al.
Physical chemistry chemical physics : PCCP, 8(24), 2826-2830 (2006-06-16)
Raman active symmetric O-H stretching modes are detected and assigned for the first time in isolated methanol, ethanol and methyl lactate trimers, providing insights into cluster structure, vibrational assignments and hydrogen-bond mediated couplings.
Jun-Ho Choi et al.
The Journal of chemical physics, 132(7), 074506-074506 (2010-02-23)
Determining absolute configuration of chiral molecule can be achieved by using vibrational optical activity (VOA) measurement methods, such as vibrational circular dichroism and Raman optical activity (ROA). Recently, vibrationally resonant sum frequency generation and difference frequency generation utilizing circularly polarized
Changhua Xu et al.
Langmuir : the ACS journal of surfaces and colloids, 24(16), 9118-9124 (2008-07-12)
This study reports the development of novel chiral sensors based on the self-assembly of perfunctionalized beta-cyclodextrins (beta-CD) on a quartz crystal microbalance transducer for real time chiral recognition. Ten chiral sensors immobilized with mercaptyl perfunctionalized beta-cyclodextrins were found to exhibit
L A Nafie et al.
Enantiomer, 3(4-5), 283-297 (1998-12-23)
Vibrational circular dichroism (VCD) is the extension of circular dichroism (CD) from electronic to vibrational transitions in molecules. In this review, we present the basic concepts of VCD and focus on its growing strength for stereochemical applications. There are three
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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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