Description

L-Alanyl-L-Cystine is a specialized dipeptide composed of the amino acids alanine and cystine. This compound is valued for its role as a stable source of cysteine, a crucial amino acid involved in protein synthesis, antioxidant defense, and cellular metabolism. It is primarily utilized in the pharmaceutical and nutraceutical industries for research and development, as well as in the formulation of high-purity supplements and advanced cell culture media.

Application

• Pharmaceutical Intermediates: Serves as a key building block in the synthesis of more complex peptides and active pharmaceutical ingredients (APIs).
• Nutraceutical & Dietary Supplements: Incorporated into formulations designed to support glutathione production, liver health, and antioxidant status.
• Biochemical Research: Used as a standardized reagent in metabolic studies, enzymatic research, and investigations into sulfur-containing amino acid pathways.
• Cell Culture Media: Acts as a component in specialized media formulations to support the growth of demanding cell lines in bioprocessing.
• Cosmetic Ingredients: Employed in advanced skincare products for its potential role in supporting skin protein structure and antioxidant activity.

Basic Information

Product Name	L-Alanyl-L-Cystine
CAS No.	115888-13-6
Molecular Formula	C6H12N2O4S2
Molecular Weight	240.30 g/mol
Synonyms	Ala-Cys; L-Ala-L-Cys; Alaninylcystine; N-L-Alanyl-L-cystine; Cystine, alanyl-; (R,R)-2,2'-Disulfanediylbis(2-aminopropanoic acid); H-Ala-Cys-OH; L-α-Alanyl-L-α,α'-diamino-β,β'-dithiodipropionic acid
EINECS	Contact for details

Quality Control

Our L-Alanyl-L-Cystine is manufactured under a quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. Specifications are designed to meet the requirements for pharmaceutical and research applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed in a dry environment to prevent degradation. For long-term storage, consider desiccated conditions.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Optical Rotation	Specific range available on COA
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.