Description

Cysteamine Sulfate is the sulfate salt of cysteamine, a stable and commercially significant form of the aminothiol compound. This product is a critical building block and intermediate in the synthesis of pharmaceuticals, particularly for the treatment of cystinosis, and serves as a key raw material in various biochemical applications. It is essential for research institutions, pharmaceutical manufacturers, and fine chemical producers requiring a high-purity, reliable source of this active pharmaceutical ingredient (API) intermediate.

Application

• Pharmaceutical Intermediate: Primary use as a key raw material in the synthesis of cysteamine bitartrate and other cysteamine salts for the treatment of nephropathic cystinosis.
• Biochemical Research: Used as a thiol reagent in biochemical studies, including protein structure analysis and the reduction of disulfide bonds.
• Radiation Protectant Studies: Investigated in research for its potential radioprotective properties due to its free radical scavenging ability.
• Antioxidant Applications: Employed in studies related to oxidative stress and as a precursor in antioxidant formulations.
• Chemical Synthesis: Serves as a versatile intermediate in organic synthesis for introducing the 2-aminoethanethiol moiety.
• Cosmetic Ingredient Intermediate: Used in the development of certain hair care and skin care products for its reducing and conditioning properties.

Basic Information

Product Name	Cysteamine Sulfate
CAS No.	126405-52-5
Molecular Formula	C2H7NO3S • 0.5H2SO4 or (C2H7NS)2•H2SO4
Molecular Weight	170.21 g/mol (for hemisulfate salt, C2H7NO3S • 0.5H2SO4)
Synonyms	2-Aminoethanethiol sulfate; 2-Mercaptoethylamine sulfate; Cysteamine hemisulfate; Decarboxycysteine sulfate; Thioethanolamine sulfate; β-Mercaptoethylamine sulfate; L-Cysteamine sulfate; Mercaptamine sulfate
EINECS	Contact for details

Quality Control

Our Cysteamine Sulfate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for pharmaceutical intermediate use. Certificates of Analysis (COA) are provided, detailing parameters such as assay, related substances, and residual solvents. We can support compliance with ICH guidelines and customer-specific pharmacopeial requirements (e.g., USP, EP).

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) and easily oxidized nature, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation and to minimize degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference standard
Assay (HPLC)	98.0% - 102.0% (on anhydrous basis)
Water Content (KF)	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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