Description

S-Benzyl-L-Cysteinol is a chiral, sulfur-containing amino alcohol derivative of L-cysteine. This compound is a versatile and valuable building block in organic synthesis, prized for its ability to introduce a protected thiol group and a chiral center into complex molecules. It is primarily utilized by research chemists and process development scientists in the pharmaceutical and biotechnology sectors for the synthesis of peptides, peptidomimetics, and other bioactive compounds.

Application

• Pharmaceutical Intermediate: Key building block for synthesizing cysteine protease inhibitors, ACE inhibitors, and other active pharmaceutical ingredients (APIs).
• Peptide Synthesis: Used in solid-phase and solution-phase peptide chemistry to incorporate modified cysteine residues with a protected side chain.
• Ligand and Chelator Preparation: Serves as a precursor for creating chiral ligands used in asymmetric catalysis or metal-chelating agents.
• Bioconjugation Chemistry: The benzyl-protected thiol can be deprotected for site-specific protein or antibody labeling and conjugation.
• Chemical Biology Research: Employed in the design and synthesis of probes, enzyme substrates, and inhibitors to study biological pathways.
• Material Science: Potential monomer or cross-linker in the synthesis of specialized polymers with unique properties.

Basic Information

Product Name	S-Benzyl-L-Cysteinol
CAS No.	88243-77-0
Molecular Formula	C10H15NOS
Molecular Weight	197.30 g/mol
Synonyms	(R)-2-Amino-3-(benzylthio)-1-propanol; L-Cysteinol, S-benzyl-; (2R)-2-Amino-3-(benzylsulfanyl)propan-1-ol; 1-Propanol, 2-amino-3-[(phenylmethyl)thio]-, (2R)-; S-Benzylcysteinol; S-Bzl-Cysteinol; Fmoc-Cys(Bzl)-ol precursor
EINECS	Contact for details

Quality Control

Our S-Benzyl-L-Cysteinol is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure high chemical purity and chiral integrity, meeting the exacting standards required for research and development. A comprehensive Certificate of Analysis (COA) detailing identity, purity (HPLC), chiral purity, and other critical parameters is provided with every shipment to guarantee traceability and consistency.

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. For long-term storage, consider storing under an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% ee
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm
Residual Solvents	Complies with ICH guidelines

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