Description

L-Homocystine is a sulfur-containing amino acid derivative formed by the oxidation of two molecules of L-homocysteine. This compound serves as a critical biochemical intermediate and reference standard in metabolic research and pharmaceutical development. It is essential for researchers and manufacturers in the life sciences, pharmaceutical, and diagnostic industries who require high-purity biochemicals for advanced studies in sulfur amino acid metabolism, cardiovascular health, and neurodegenerative diseases.

Application

• Biochemical Research: Used as a key reference standard and intermediate in studies of homocysteine metabolism, transsulfuration pathways, and related disorders.
• Pharmaceutical Development: Serves as a starting material or analytical standard in the synthesis and quality control of drugs targeting cardiovascular and neurological conditions.
• Diagnostic Reagent Manufacturing: Incorporated into in-vitro diagnostic (IVD) kits and calibrators for the accurate measurement of homocysteine levels in clinical laboratories.
• Nutritional Science: Employed in research investigating the role of sulfur amino acids in human nutrition, supplementation, and metabolic health.
• Cell Culture & Microbiology: Utilized as a component of specialized media for culturing certain microorganisms or cell lines requiring specific sulfur sources.

Basic Information

Product Name	L-Homocystine
CAS No.	626-72-2
Molecular Formula	C8H16N2O4S2
Molecular Weight	268.35 g/mol
Synonyms	L-α,α'-Diamino-γ,γ'-dithiodibutyric Acid; (R,R)-Homocystine; (2R,2'R)-3,3'-Dithiobis(2-aminobutanoic acid); Homocystine; DL-Homocystine (mixture); Hcy2; L-2-Amino-4-[(2-amino-2-carboxyethyl)dithio]butyric Acid
EINECS	210-961-1

Quality Control

Our L-Homocystine is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, optical rotation verification, and residual solvent analysis, to ensure it meets the stringent requirements for research and pharmaceutical applications. A detailed Certificate of Analysis (COA) 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 product is hygroscopic (moisture-sensitive) and must be kept in a desiccated environment to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Optical Rotation [α]20/D	-90° to -100° (c=1 in 1N HCl)
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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