Description

3β-(Tosyloxy)-5α-Cholestane is a high-purity steroidal intermediate of significant importance in synthetic organic chemistry. This compound is valued for its role as a versatile building block in the synthesis of complex steroid derivatives and other biologically active molecules. It is primarily needed by research institutions and pharmaceutical companies engaged in the development of novel therapeutic agents, as well as by fine chemical manufacturers producing specialized steroid-based compounds.

Application

• Pharmaceutical Intermediate: A key precursor in the multi-step synthesis of novel steroid-based drugs and hormone analogs for therapeutic applications.
• Research & Development: Used in academic and industrial R&D laboratories for studying steroid chemistry, reaction mechanisms, and developing new synthetic pathways.
• Fine Chemical Synthesis: Serves as a critical building block for the production of high-value, complex steroidal compounds used in various life science applications.
• Reference Standard: Employed as an analytical standard in quality control laboratories for method development and verification in steroid analysis.

Basic Information

Product Name	3β-(Tosyloxy)-5α-Cholestane
CAS No.	3381-52-0
Molecular Formula	C34H54O3S
Molecular Weight	542.85 g/mol
Synonyms	3β-Tosyloxy-5α-cholestane; 5α-Cholestan-3β-yl 4-methylbenzenesulfonate; Cholestane-3β-ol, tosylate; 3β-Hydroxy-5α-cholestane tosylate; 5α-Cholestan-3β-ol tosylate; Tosylcholestane; 3β-Tosyloxycholestane; 3381-52-0
EINECS	Contact for details

Quality Control

Our 3β-(Tosyloxy)-5α-Cholestane is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and purity determination, to meet rigorous customer specifications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee product integrity and support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
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.