Description

S-Methylcysteine is a sulfur-containing amino acid derivative, specifically the S-methylated form of L-cysteine. This compound is valued for its role as a biochemical precursor and building block in the synthesis of more complex molecules and in various research applications. It is primarily utilized by the pharmaceutical, biotechnology, and fine chemical synthesis industries for drug development, metabolic studies, and as a specialty intermediate.

Application

• Pharmaceutical Intermediate: Used in the research and synthesis of novel drug candidates, particularly those targeting metabolic pathways or requiring specific chiral centers.
• Biochemical Research: Serves as a standard or reagent in enzymatic studies, metabolic pathway analysis, and proteomics research.
• Nutritional Science: Investigated for its potential role in sulfur amino acid metabolism and related nutritional applications.
• Fine Chemical Synthesis: Acts as a chiral building block for the production of specialized chemicals, peptides, and complex organic compounds.
• Cosmetic Ingredient: Potential use in formulations for skin and hair care products due to its sulfur content and biochemical properties.

Basic Information

Product Name	S-Methylcysteine
CAS No.	7728-98-5
Molecular Formula	C4H9NO2S
Molecular Weight	135.18 g/mol
Synonyms	S-Methyl-L-cysteine; (R)-2-Amino-3-(methylthio)propanoic acid; 3-(Methylthio)-L-alanine; L-S-Methylcysteine; Methylcysteine; NSC 163063; SMC
EINECS	231-791-2

Quality Control

Our S-Methylcysteine is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specifications such as assay, chiral purity, and impurity profiles are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% (L-Isomer)
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.