Description

H-Cys(Bzl)-Betana is a protected cysteine derivative, specifically S-benzyl-L-cysteine, widely utilized as a critical building block in peptide synthesis. This compound is essential for researchers and manufacturers requiring precise control over cysteine reactivity and disulfide bond formation. It is a key intermediate for pharmaceutical R&D, particularly in the development of therapeutic peptides and biochemical research reagents.

Application

• Peptide Synthesis: A fundamental protected amino acid for solid-phase and solution-phase peptide synthesis (SPPS).
• Pharmaceutical Intermediates: Serves as a crucial building block in the production of active pharmaceutical ingredients (APIs) for peptide-based drugs.
• Biochemical Research: Used in studies involving protein structure, function, and the role of cysteine residues.
• Disulfide Bridge Formation: Provides a protected thiol group that can be selectively deprotected to form intramolecular or intermolecular disulfide bonds in target peptides.
• Ligand and Conjugate Preparation: Employed in the synthesis of peptide conjugates for diagnostic or targeted drug delivery applications.

Basic Information

Product Name	H-Cys(Bzl)-Betana
CAS No.	7436-63-7
Molecular Formula	C10H13NO2S
Molecular Weight	211.28 g/mol
Synonyms	S-Benzyl-L-cysteine; (R)-2-Amino-3-(benzylthio)propanoic acid; L-Cysteine, S-benzyl-; S-Benzylcysteine; H-Cys(Bzl)-OH; Fmoc-Cys(Bzl)-OH (when protected); Boc-Cys(Bzl)-OH (when protected); Cysteine S-benzyl ether
EINECS	Contact for details

Quality Control

Our H-Cys(Bzl)-Betana is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing to ensure high purity and consistency, meeting the exacting standards required for pharmaceutical research and development. Certificates of Analysis (COA) detailing purity, chiral integrity, and impurity profiles are available upon request.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0%
Optical Rotation	Specific range available on COA
Loss on Drying	≤1.0%
Heavy Metals	≤20 ppm
Residue on Ignition	≤0.5%

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