Description

S,S-Butanediyldi-L-Cysteine is a specialized, high-purity biochemical building block featuring a disulfide bridge. This compound matters for its role as a key intermediate in the synthesis of complex peptides and as a precursor for chelating agents and pharmaceutical actives. It is primarily needed by research institutions and manufacturers in the pharmaceutical, biotechnology, and fine chemical sectors for developing novel therapeutics and diagnostic agents.

Application

• Pharmaceutical Intermediate: Critical building block for synthesizing peptide-based drugs and active pharmaceutical ingredients (APIs).
• Biochemical Research: Used in proteomics and enzymology studies as a model compound or a reagent for studying disulfide bond formation and stability.
• Chelating Agent Synthesis: Serves as a precursor for creating specialized ligands used in metal ion binding and catalysis.
• Cosmetic & Personal Care Ingredients: Potential use in the formulation of advanced skincare products for its antioxidant and stabilizing properties.
• Diagnostic Reagent Development: Employed in the creation of reagents and probes for clinical diagnostics and bioassays.

Basic Information

Product Name	S,S-Butanediyldi-L-Cysteine
CAS No.	50727-80-5
Molecular Formula	C10H18N2O4S2
Molecular Weight	294.39 g/mol
Synonyms	L-Cystine, S,S'-1,4-butanediylbis-; (R,R)-2,2'-(1,4-Dithiabutane-1,4-diyl)bis(3-aminopropanoic acid); 1,4-Bis[(2R)-2-amino-2-carboxyethylsulfanyl]butane; S,S'-Butane-1,4-diyl L-cystine; Bis-L-cysteine butane disulfide; 50727-80-5
EINECS	Contact for details

Quality Control

Our S,S-Butanediyldi-L-Cysteine is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets the high standards required for research and pharmaceutical applications. Certificates of Analysis (COA) are available upon request, and we can support compliance with cGMP, ISO, and other relevant regulatory frameworks as needed.

Storage

Preserve in a tightly closed container, protected from light. Due to its property of being easily oxidized, long-term storage is recommended under an inert atmosphere (e.g., nitrogen or argon). Store at a controlled room temperature (15-25°C) in a cool, dry, and well-ventilated place. Keep the container tightly sealed to minimize exposure to moisture and air.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Optical Rotation	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

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