Description

S,S-Hexanediyldi-L-Cysteine is a specialized organic compound featuring a hexamethylene bridge connecting two L-cysteine moieties via disulfide bonds. This molecular architecture is critical for applications requiring controlled redox activity and the formation of stable, biocompatible cross-links. It serves as a valuable building block and biochemical tool in advanced research and product development. Key industries that utilize this compound include pharmaceutical development, cosmetic science, and biochemical research for its unique structural and functional properties.

Application

• Pharmaceutical Intermediate: Used in the synthesis of novel drug candidates, particularly those targeting diseases related to oxidative stress or requiring specific disulfide bridge formation.
• Bioconjugation & Protein Engineering: Acts as a cross-linking agent or a functional handle for modifying peptides, proteins, and antibodies to alter their stability, activity, or targeting.
• Cosmetic & Personal Care Formulations: Incorporated into advanced skincare products for its potential antioxidant properties and role in stabilizing active ingredients.
• Biochemical Research Reagent: Employed in studies of thiol-disulfide exchange kinetics, enzyme mechanisms, and as a model compound in redox biology.
• Hair Care Products: Can be used in permanent wave solutions or hair-straightening formulations where disulfide bond rearrangement is required.
• Material Science: Serves as a monomer or cross-linker in the development of biodegradable polymers and hydrogels with responsive disulfide linkages.

Basic Information

Product Name	S,S-Hexanediyldi-L-Cysteine
CAS No.	76305-78-7
Molecular Formula	C12H22N2O4S2
Molecular Weight	322.44 g/mol
Synonyms	L-Cystine, 1,6-hexanediyl ester; 1,6-Bis(L-cysteine) hexane disulfide; Hexamethylene bis(L-cysteine) disulfide; NSC 334365; Bis(L-cysteine) hexamethylene disulfide; S,S'-Hexamethylenebis-L-cysteine; S,S'-(1,6-Hexanediyl)bis-L-cysteine
EINECS	Contact for details

Quality Control

Our S,S-Hexanediyldi-L-Cysteine is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity, chiral analysis, and identity confirmation via spectroscopic methods. We provide a detailed Certificate of Analysis (COA) with every shipment, ensuring traceability and compliance with your specific research or production requirements. Custom purity grades, including pharmaceutical intermediates, are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C under an inert atmosphere (e.g., nitrogen or argon) to prevent oxidation. The container should be kept tightly sealed in a desiccator to minimize exposure to moisture. For long-term storage, consider freezing at -20°C.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (HPLC)	≥ 98.0%
Optical Rotation	[α]20/D: Contact for details
Water Content (KF)	≤ 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.