Description

Dl-Cystine Hydrochloride CAS NO 90350-38-2 is the hydrochloride salt of the racemic form of the sulfur-containing amino acid cystine. This compound is a critical building block and intermediate in the synthesis of pharmaceuticals, nutritional supplements, and biochemical reagents. It is primarily sought by manufacturers in the pharmaceutical, nutraceutical, and research & development sectors for its role in peptide synthesis and as a precursor in metabolic studies.

Application

• Pharmaceutical Intermediates: A key chiral building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for drugs targeting metabolic disorders.
• Nutraceutical & Dietary Supplements: Used as a raw material in the formulation of specialized amino acid supplements and parenteral nutrition solutions.
• Biochemical Research: Serves as a standard and reagent in biochemical research, enzymatic studies, and cell culture media preparation.
• Cosmetic & Personal Care: Incorporated into hair and skin care formulations for its potential role in keratin structure and antioxidant properties.
• Food & Beverage Fortification: Employed as a nutritional fortifier in specialized food products and clinical nutrition.
• Chemical Synthesis: Acts as a starting material or intermediate in organic synthesis for producing more complex sulfur-containing compounds.

Basic Information

Product Name	Dl-Cystine Hydrochloride
CAS No.	90350-38-2
Molecular Formula	C6H12N2O4S2 • xHCl
Molecular Weight	Contact for details
Synonyms	DL-Cystine Dihydrochloride; (±)-Cystine Hydrochloride; Racemic Cystine Hydrochloride; 3,3'-Dithiobis(2-aminopropanoic acid) dihydrochloride; Cystine HCl; H-Cys(S-S-Cys)-OH • HCl; Dithiodialanine hydrochloride
EINECS	Contact for details

Quality Control

Our Dl-Cystine Hydrochloride is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for pharmaceutical and nutritional applications. Certificates of Analysis (COA) documenting identity, purity, and impurity profiles are available upon request to support your regulatory and quality assurance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect stability and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Specific Rotation	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm
Related Substances (HPLC)	Contact for details

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