Description

S-Carbamyl-L-Cysteine is a modified amino acid derivative of L-cysteine, featuring a carbamyl group on the sulfur atom. This structural modification enhances its stability and makes it a valuable intermediate and active ingredient in advanced pharmaceutical and nutraceutical synthesis. It is primarily sought after by manufacturers in the pharmaceutical, research, and high-purity chemical sectors for its role in developing therapeutic agents and biochemical research tools.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of specialized drugs and active pharmaceutical ingredients (APIs).
• Biochemical Research: Used as a reagent or substrate in enzymatic studies and metabolic pathway research.
• Nutraceutical Formulations: Incorporated into advanced dietary supplements for its potential bioactive properties.
• Peptide Synthesis: Serves as a protected cysteine derivative in solid-phase and solution-phase peptide chemistry.
• Reference Standard: Employed as a high-purity analytical standard in quality control laboratories for HPLC or LC-MS methods.
• Cosmetic Ingredients: Potential use in the development of specialized skincare products for its thiol-related activity.

Basic Information

Product Name	S-Carbamyl-L-Cysteine
CAS No.	2072-71-1
Molecular Formula	C4H8N2O3S
Molecular Weight	164.18 g/mol
Synonyms	Carbocysteine Precursor; L-Cysteine, S-carbamoyl-; (R)-2-Amino-3-(carbamoylthio)propanoic acid; NSC 163039; S-Ureido-L-cysteine; Carbamylcysteine; Thiocarbamyl-L-cysteine; 2-Amino-3-[(aminocarbonyl)thio]propanoic acid
EINECS	218-186-7

Quality Control

Our S-Carbamyl-L-Cysteine is produced under strict quality management systems. Each batch is subjected to comprehensive analytical testing, including HPLC for purity, chiral analysis, and residual solvent screening, to ensure it meets stringent specifications for pharmaceutical and research applications. Certificates of Analysis (COA) are provided and can be tailored to meet specific customer or pharmacopeial requirements (e.g., USP, EP).

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent degradation. For long-term storage, consider using desiccants.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Optical Rotation [α]20/D	Specific range available on request
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 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.