Description

S-(2-Aminoethyl)-L-Cysteine Hydrochloride is a modified amino acid derivative of L-cysteine, where the thiol group is replaced by an aminoethyl moiety, supplied as its hydrochloride salt. This structural modification makes it a valuable biochemical tool and a key intermediate in the synthesis of more complex molecules. It is primarily sought after by research institutions and manufacturers in the pharmaceutical and biotechnology sectors for its role in peptide synthesis, enzyme studies, and as a precursor for specialized biochemicals.

Application

• Biochemical Research: Used as a substrate or inhibitor in enzymatic studies, particularly those involving cysteine proteases or transsulfuration pathways.
• Pharmaceutical Intermediates: Serves as a key building block in the synthesis of novel peptide-based drugs and therapeutic agents.
• Peptide Synthesis: Employed in solid-phase and solution-phase peptide synthesis to introduce modified cysteine residues, altering peptide stability and function.
• Nutritional Science Research: Investigated in studies related to amino acid metabolism and the biochemical roles of sulfur-containing amino acids.
• Reference Standard: Utilized as a high-purity analytical standard in HPLC, LC-MS, and other chromatographic methods for quality control and method development.

Basic Information

Product Name	S-(2-Aminoethyl)-L-Cysteine Hydrochloride
CAS No.	4099-35-8
Molecular Formula	C5H13ClN2O2S
Molecular Weight	200.68 g/mol
Synonyms	S-(2-Aminoethyl)cysteine Hydrochloride; L-S-(2-Aminoethyl)cysteine Hydrochloride; 2-Aminoethyl-L-cysteine Hydrochloride; Thialysine Hydrochloride; S-Aminoethyl-L-cysteine HCl; NSC 137780; (2R)-2-Amino-3-(2-aminoethylsulfanyl)propanoic acid hydrochloride
EINECS	Contact for details

Quality Control

Our S-(2-Aminoethyl)-L-Cysteine Hydrochloride is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including identification, purity assay, and impurity profiling, to ensure it meets the high standards required for research and synthesis. Certificates of Analysis (COA) with detailed chromatographic data (HPLC) are provided for every shipment.

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 desiccated environment to maintain stability and purity. For long-term storage, consider storing under an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Optical Rotation	Contact for details
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

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