Description

H-Cys(Bzl)-Ome Hcl is a protected cysteine derivative, specifically S-benzyl-L-cysteine methyl ester hydrochloride, widely used as a key building block in peptide synthesis. This compound is critical for researchers and manufacturers who require precise control over side-chain reactivity and protection strategies during complex peptide assembly. It is an essential raw material for pharmaceutical R&D, particularly in the development of therapeutic peptides and biochemical research applications.

Application

• Peptide Synthesis Building Block: A fundamental reagent for the solid-phase and solution-phase synthesis of peptides, where the S-benzyl group protects the thiol functionality.
• Pharmaceutical Intermediate: Used in the research and production of active pharmaceutical ingredients (APIs) for peptide-based drugs.
• Biochemical Research: Employed in studies involving protein structure, enzyme mechanisms, and the synthesis of custom peptides for biological assays.
• Protecting Group Chemistry: Serves as a model compound for studying the introduction and removal of the S-benzyl (Bzl) protecting group in synthetic organic chemistry.
• Ligand and Conjugate Preparation: Useful for creating cysteine-containing ligands, linkers, or bioconjugates where controlled deprotection is required.

Basic Information

Product Name	H-Cys(Bzl)-Ome Hcl
CAS No.	16741-80-3
Molecular Formula	C11H16ClNO2S
Molecular Weight	261.77 g/mol
Synonyms	S-Benzyl-L-cysteine methyl ester hydrochloride; L-Cysteine, S-benzyl-, methyl ester, hydrochloride; Methyl S-benzyl-L-cysteinate hydrochloride; S-Benzylcysteine methyl ester HCl; Cys(Bzl)-OMe·HCl; H-Cys(Bzl)-OMe·HCl; (2R)-2-amino-3-(benzylsulfanyl)propanoic acid methyl ester;hydrochloride
EINECS	Contact for details

Quality Control

Our H-Cys(Bzl)-Ome Hcl is produced under strict quality management systems to ensure batch-to-batch consistency and high purity suitable for research and synthesis applications. Each lot is analyzed using advanced techniques including HPLC, NMR, and mass spectrometry to confirm identity and purity. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This product is hygroscopic (moisture-sensitive) and should be handled in a dry environment to prevent degradation. For long-term storage, consider desiccated conditions.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Assay (HPLC)	≥98.0%
Optical Rotation	Contact for details
Water Content (KF)	≤1.0%
Residue on Ignition	≤0.1%
Heavy Metals	≤20 ppm

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