Description

(S)-(-)-Thiolactic Acid CAS NO 57965-30-7 is the enantiomerically pure S-form of thiolactic acid, a sulfur-containing analog of lactic acid. This high-purity chiral building block is critical for synthesizing optically active compounds where stereochemistry dictates biological activity and material properties. It is essential for research and production in the pharmaceutical, agrochemical, and specialty chemical industries, serving as a key precursor for chiral ligands, active pharmaceutical ingredients (APIs), and advanced materials.

Application

• Pharmaceutical Intermediates: A key chiral synthon for the synthesis of enantiomerically pure active pharmaceutical ingredients (APIs), particularly in cardiovascular and metabolic disease treatments.
• Chiral Ligand & Catalyst Synthesis: Used to prepare sulfur-containing chiral ligands and organocatalysts for asymmetric synthesis, enhancing reaction selectivity and yield.
• Agrochemicals: Employed in the development of chiral herbicides, fungicides, and plant growth regulators to improve efficacy and reduce environmental impact.
• Peptide Modification & Biochemistry: Serves as a building block for introducing thioether linkages or modifying cysteine analogs in peptides and biochemical probes.
• Flavor & Fragrance Industry: Acts as a precursor for sulfur-containing flavor compounds, contributing to meaty, roasted, or savory notes in food products.
• Polymer & Material Science: Incorporated into polymers to impart specific chiral properties, biodegradability, or metal-chelating capabilities for advanced material applications.

Basic Information

Product Name	(S)-(-)-Thiolactic Acid
CAS No.	57965-30-7
Molecular Formula	C3H6O2S
Molecular Weight	106.14 g/mol
Synonyms	(S)-2-Mercaptopropanoic Acid; (S)-2-Sulfanylpropanoic Acid; (S)-α-Mercaptopropionic Acid; L-Thiolactic Acid; (-)-Thiolactic Acid; (S)-(-)-2-Mercaptopropionic Acid; (2S)-2-Sulfanylpropanoic Acid; (S)-MPA
EINECS	Contact for details

Quality Control

Our (S)-(-)-Thiolactic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis by HPLC, to ensure compliance with exacting standards for enantiomeric excess (e.e.) and chemical purity. Certificates of Analysis (COA) detailing specific results for identity, assay, chiral purity, and impurities are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation. Keep away from heat, sparks, open flames, and incompatible materials such as strong oxidizing agents and bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (Enantiomeric Excess)	≥ 99.0% e.e.
Specific Rotation [α]20/D	-15° to -20° (c=1, H2O)
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.