Description

S-Propylcysteine is a specialized, high-purity sulfur-containing amino acid derivative. This compound is valued for its role as a key chiral building block and intermediate in advanced organic synthesis and pharmaceutical research. It is essential for researchers and manufacturers in the pharmaceutical, biotechnology, and fine chemical industries developing novel therapeutics and bioactive molecules.

Application

• Pharmaceutical Intermediate: A critical chiral synthon for the synthesis of active pharmaceutical ingredients (APIs), particularly those targeting neurological and metabolic disorders.
• Biochemical Research: Used in proteomics and enzymology studies to investigate protein structure, function, and cysteine-related biochemical pathways.
• Peptide Synthesis: Serves as a protected cysteine analog in solid-phase and solution-phase peptide synthesis for creating modified peptides with enhanced stability or specific activity.
• Precursor for Radiopharmaceuticals: Potential use as a precursor in the labeling of compounds for diagnostic imaging, such as PET tracers.
• Nutritional Science Research: Investigated for its potential metabolic effects and role as a source of bioavailable sulfur in specialized nutritional formulations.
• Cosmetic Ingredient Development: Explored for use in advanced skincare formulations aimed at antioxidant protection and supporting skin protein structure.

Basic Information

Product Name	S-Propylcysteine
CAS No.	65309-79-7
Molecular Formula	C6H13NO2S
Molecular Weight	163.24 g/mol
Synonyms	(R)-2-Amino-3-(propylthio)propanoic acid; D-Propylcysteine; (R)-Propylcysteine; S-Propyl-L-cysteine; L-Cysteine, S-propyl-; 2-Amino-3-(propylthio)propionic acid; Propylcysteine; NSC 113928
EINECS	Contact for details

Quality Control

Our S-Propylcysteine CAS 65309-79-7 is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity verification by HPLC, to ensure it meets the high standards required for pharmaceutical R&D and production. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under anhydrous conditions to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0%
Chiral Purity (HPLC)	≥99.0% ee
Loss on Drying	≤1.0%
Residue on Ignition	≤0.1%
Heavy Metals	≤10 ppm

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