Description

N-(Carboxymethyl)-DL-Cysteine is a versatile sulfur-containing amino acid derivative, synthesized from DL-cysteine. This compound is valued for its unique chemical structure, which combines a thiol group and a carboxylic acid moiety, making it a valuable intermediate and precursor in advanced chemical synthesis. It is primarily utilized in the pharmaceutical, biochemical research, and specialty chemical sectors for applications requiring a protected or modified cysteine analog.

Application

• Pharmaceutical Intermediate: Acts as a key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those targeting conditions related to oxidative stress or requiring thiol-based chemistry.
• Biochemical Research: Used as a precursor or substrate in enzymatic studies and for the preparation of modified peptides and proteins.
• Chelating Agent Synthesis: Serves as a starting material for the production of specialized chelating agents used in various industrial processes.
• Cosmetic & Personal Care Ingredients: Employed in the development of advanced skincare formulations, particularly those with antioxidant or anti-aging properties.
• Nutritional Supplement Precursor: Utilized in the manufacture of specialized nutritional compounds where a bioavailable form of cysteine is required.

Basic Information

Product Name	N-(Carboxymethyl)-DL-Cysteine
CAS No.	21301-10-0
Molecular Formula	C5H9NO4S
Molecular Weight	179.19 g/mol
Synonyms	DL-Carboxymethylcysteine; DL-Carbocysteine; DL-Carbocisteine; DL-CMC; DL-Carboxymethylcysteine; DL-2-Amino-3-[(carboxymethyl)thio]propanoic acid; DL-3-[(Carboxymethyl)thio]alanine; DL-Thiodiglycolic acid amide of cysteine
EINECS	244-307-3

Quality Control

Our N-(Carboxymethyl)-DL-Cysteine is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide Certificates of Analysis (COA) with detailed results for all critical parameters, including assay, chiral purity, and impurity profiles. Our quality commitment aligns with cGMP principles where applicable, ensuring reliability for research and industrial use.

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). This product is easily oxidized; for long-term storage, consider keeping under an inert atmosphere (e.g., nitrogen or argon) to maintain stability and prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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