Description

S-Hexyl-L-Cysteine is a specialized, high-purity amino acid derivative featuring a hexyl side chain attached to the L-cysteine backbone. This compound is valued for its role as a versatile chiral building block and a precursor in the synthesis of complex molecules, offering enhanced lipophilicity compared to standard cysteine. It is primarily sought by research institutions and manufacturers in the pharmaceutical, biotechnology, and fine chemical sectors for applications in drug discovery, peptide synthesis, and biochemical research.

Application

• Pharmaceutical Intermediates: Serves as a key chiral synthon in the research and development of new active pharmaceutical ingredients (APIs), particularly for drugs targeting neurological and metabolic pathways.
• Peptide Synthesis: Used as a modified amino acid residue to introduce lipophilic character into synthetic peptides, potentially improving membrane permeability and stability.
• Biochemical Research: Acts as a substrate or inhibitor in enzymatic studies and as a tool compound for investigating sulfur metabolism and redox biology.
• Cosmetic & Personal Care Ingredients: Potential application as a precursor for synthesizing novel conditioning or anti-aging agents in high-end cosmetic formulations.
• Food & Nutraceutical Research: Investigated for use in developing specialized nutritional supplements and flavor enhancers due to its sulfur-containing structure.
• Catalyst & Ligand Preparation: Utilized in the preparation of chiral ligands for asymmetric catalysis in fine chemical synthesis.

Basic Information

Product Name	S-Hexyl-L-Cysteine
CAS No.	23884-44-8
Molecular Formula	C9H19NO2S
Molecular Weight	205.32 g/mol
Synonyms	L-Cysteine, S-hexyl-; (R)-2-Amino-3-(hexylthio)propanoic acid; Hexylcysteine; S-Hexylcysteine; NSC 113993; 3-(Hexylthio)-L-alanine; Hexyl-L-cysteine; S-n-Hexyl-L-cysteine
EINECS	Contact for details

Quality Control

Our S-Hexyl-L-Cysteine is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity verification and impurity profiling, to ensure it meets the stringent requirements for research and development applications. A Certificate of Analysis (COA) detailing specific results for identity, purity (typically ≥98% by HPLC), and related substances is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This material is light-sensitive (store away from light) and easily oxidized (store under inert atmosphere). For long-term storage, consider keeping the container under an inert gas such as nitrogen or argon.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Optical Rotation	[α]20/D: Specific range provided on COA
Chiral Purity (HPLC)	≥ 99.0%
Loss on Drying	≤ 0.5%
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.