Description

L-Cystathionine is a key sulfur-containing amino acid derivative that plays a critical role in the transsulfuration pathway of methionine metabolism. Its primary commercial value lies in its use as a high-purity biochemical reagent and a critical intermediate in pharmaceutical research and development. This compound is essential for researchers and manufacturers in the pharmaceutical, biotechnology, and nutraceutical industries, particularly those focused on metabolic studies, enzyme research, and the synthesis of specialized amino acids.

Application

• Biochemical Research: Used as a standard and substrate in enzymatic assays and metabolic pathway studies, particularly for cystathionine β-synthase (CBS) and cystathionine γ-lyase (CSE).
• Pharmaceutical Intermediates: Serves as a crucial building block in the synthesis of more complex sulfur-containing amino acids and potential therapeutic agents.
• Cell Culture & Media: Employed as a specialized component in defined cell culture media for specific mammalian and microbial cell lines requiring this metabolite.
• Diagnostic Reagents: Utilized in the formulation of diagnostic kits and reagents for the detection and quantification of related enzymes and metabolic disorders.
• Nutritional Science: Studied as a compound of interest in research related to sulfur amino acid metabolism and its implications in health and disease.
• Reference Standard: Supplied as a high-purity certified reference material (CRM) for analytical method development and validation in quality control laboratories.

Basic Information

Product Name	L-Cystathionine
CAS No.	56-88-2
Molecular Formula	C7H14N2O4S
Molecular Weight	222.26 g/mol
Synonyms	L-Cystathionine; (S)-2-Amino-4-((2-amino-2-carboxyethyl)thio)butanoic acid; L-2-Amino-4-(2-amino-2-carboxyethylthio)butyric acid; (S)-2-Amino-4-(3-amino-3-carboxypropylthio)butyric acid; H-Cys(SAcm)-OH; Cystathionine, L-; L-α-Amino-γ-(2-amino-2-carboxyethylthio)butyric acid
EINECS	200-296-0

Quality Control

Our L-Cystathionine is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, specific optical rotation verification, and tests for residual solvents and heavy metals to ensure it meets stringent specifications for research and production use. A comprehensive Certificate of Analysis (COA) detailing all test results 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. For long-term storage, consider storing under an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Identification (HPLC)	Conforms to reference standard
Assay (HPLC)	≥ 98.0%
Specific Optical Rotation	[α]20/D: +20.0° to +24.0° (c=1 in 1N HCl)
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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