Description

S-Carboxymethyl-L-Cysteine is a modified amino acid derivative, specifically the S-carboxymethylated form of L-cysteine. This compound is valued for its role as a key pharmaceutical intermediate and a mucolytic agent, offering significant commercial and therapeutic utility. It is primarily sought after by manufacturers in the pharmaceutical, nutraceutical, and fine chemical synthesis industries for the production of advanced active pharmaceutical ingredients (APIs) and specialty biochemicals.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of advanced mucolytic drugs and other therapeutic agents.
• Mucolytic Agent Production: Used in the manufacture of medications designed to break down mucus in the respiratory tract.
• Biochemical Research: Serves as a reagent in proteomics and biochemical studies involving thiol group modification and protein analysis.
• Fine Chemical Synthesis: Employed as a chiral synthon for the production of complex organic molecules and specialty chemicals.
• Nutraceutical Formulations: Incorporated into advanced dietary supplements targeting respiratory health and antioxidant support.

Basic Information

Product Name	S-Carboxymethyl-L-Cysteine
CAS No.	2387-59-9
Molecular Formula	C5H9NO4S
Molecular Weight	179.19 g/mol
Synonyms	Carbocisteine; S-Carboxymethylcysteine; L-Carbocisteine; (R)-2-Amino-3-(carboxymethylthio)propanoic acid; Mucodyne; Mucolitic; Mucolysin; Fluditec
EINECS	219-196-3

Quality Control

Our S-Carboxymethyl-L-Cysteine is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for pharmaceutical applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to guarantee supply reliability and quality assurance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.5%
Specific Rotation	-90.0° to -95.0°
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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