Description

S-Propyl-D-Cysteine is a high-purity, non-natural chiral amino acid derivative, specifically the D-isomer of S-propyl cysteine. This compound is a critical building block in pharmaceutical research and development, particularly for the synthesis of novel active pharmaceutical ingredients (APIs) and chiral ligands. Its primary value lies in its role as a key intermediate for creating molecules with specific stereochemistry, which is essential for drug efficacy and safety. This product is essential for researchers and manufacturers in the pharmaceutical, biotechnology, and fine chemical sectors who require high-quality, optically pure intermediates for advanced synthesis.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of new therapeutic agents, including enzyme inhibitors and receptor modulators.
• Peptide Synthesis: Used in solid-phase and solution-phase peptide synthesis to incorporate the D-cysteine moiety, influencing peptide stability and bioactivity.
• Biochemical Research: Serves as a standard or reagent in biochemical studies investigating sulfur-containing amino acid metabolism and enzyme mechanisms.
• Asymmetric Catalysis: Potential use as a precursor for chiral ligands or organocatalysts in asymmetric synthesis to produce enantiomerically enriched compounds.
• Reference Standard: Employed as an analytical reference standard in quality control laboratories for method development and validation.

Basic Information

Product Name	S-Propyl-D-Cysteine
CAS No.	85955-34-6
Molecular Formula	C6H13NO2S
Molecular Weight	163.24 g/mol
Synonyms	D-S-Propylcysteine; (R)-2-Amino-3-(propylthio)propanoic acid; D-3-(Propylthio)alanine; (R)-3-(Propylthio)alanine; D-2-Amino-3-(propylthio)propionic acid; NSC 334904; D-Cysteine, S-propyl-
EINECS	Contact for details

Quality Control

Our S-Propyl-D-Cysteine is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity analysis by HPLC, to ensure it meets the high standards required for research and pharmaceutical applications. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming identity, purity, and specific impurity profiles.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). This compound is easily oxidized; for long-term storage, it is recommended to keep the container under an inert atmosphere (e.g., nitrogen or argon) and desiccated.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0%
Chiral Purity (HPLC)	≥99.0% (D-isomer)
Loss on Drying	≤0.5%
Residue on Ignition	≤0.1%

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