Description

S-Carboxymethyl-L-Cysteine is a chemically modified derivative of the amino acid L-cysteine, featuring a carboxymethyl group on the sulfur atom. This modification enhances its stability and mucolytic properties, making it a valuable intermediate in pharmaceutical synthesis. It is primarily utilized by manufacturers in the pharmaceutical and nutraceutical industries for the production of advanced active pharmaceutical ingredients (APIs) and as a key building block in research and development.

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of mucolytic and expectorant drugs.
• Active Pharmaceutical Ingredient (API) Production: Used in the manufacture of finished dosage forms for respiratory therapies.
• Biochemical Research: Serves as a precursor or standard in proteomics and enzyme studies.
• Nutraceutical Formulations: Incorporated into advanced dietary supplements targeting respiratory health.
• Cosmetic Ingredients: Potential use in skincare formulations for its antioxidant and keratin-modifying properties.
• Chemical Synthesis: Employed in organic synthesis for introducing protected thiol or carboxylic acid functionalities.

Basic Information

Product Name	S-Carboxymethyl-L-Cysteine
CAS No.	186537-58-6
Molecular Formula	C5H9NO4S
Molecular Weight	179.19 g/mol
Synonyms	Carbocisteine; S-Carboxymethylcysteine; L-Carbocisteine; (R)-2-Amino-3-(carboxymethylthio)propanoic acid; ACMC; Mucolytic agent; Expectorant intermediate; SCMC
EINECS	Contact for details

Quality Control

Our S-Carboxymethyl-L-Cysteine is produced under strict quality management systems. Each batch undergoes comprehensive 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 traceability and batch-to-batch consistency.

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 each use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference standard
Assay (HPLC)	≥ 98.5%
Optical Rotation	Specific range upon request
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.