Description

S-Carboxymethyl-L-Cysteine is a modified amino acid derivative, specifically the carboxymethylated form of L-cysteine. This compound is valued for its mucolytic and antioxidant properties, making it a key intermediate in pharmaceutical synthesis and a functional ingredient in advanced formulations. It is primarily utilized by manufacturers in the pharmaceutical, nutraceutical, and personal care industries for developing therapeutic and protective products.

Application

• Pharmaceutical Active Ingredient: Used as a mucolytic agent in cough syrups and expectorants to break down mucus in the respiratory tract.
• Nutraceutical Supplement: Incorporated into dietary supplements for its antioxidant properties and potential role in supporting respiratory health.
• Cosmetic & Personal Care: Serves as a skin-conditioning agent and antioxidant in anti-aging creams, serums, and protective lotions.
• Biochemical Research: Employed as a reagent or standard in biochemical and pharmacological research studies.
• Veterinary Medicine: Used in formulations for animal health products targeting respiratory conditions.

Basic Information

Product Name	S-Carboxymethyl-L-Cysteine
CAS No.	638-23-3
Molecular Formula	C5H9NO4S
Molecular Weight	179.19 g/mol
Synonyms	Carbocisteine; S-Carboxymethylcysteine; L-Carbocisteine; Mucodyne; Mucopront; Rhinathiol; Fluditec; Transbronchin; (R)-2-Amino-3-(carboxymethylthio)propanoic acid; 2-Amino-3-[(carboxymethyl)thio]propanoic acid
EINECS	211-343-5

Quality Control

Our S-Carboxymethyl-L-Cysteine is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for pharmaceutical and nutraceutical applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

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 nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.5%
Specific Rotation	+34.0° to +38.0° (c=1 in 1N HCl)
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm
Related Substances (HPLC)	Total impurities ≤ 1.5%

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