Description

(25S)-5β-Spirostan-3-One CAS NO 639-96-3 is a high-purity steroidal sapogenin derivative, specifically a spirostanone, serving as a critical advanced intermediate in organic synthesis. Its defined stereochemistry and ketone functionality make it an invaluable building block for the pharmaceutical and research sectors. This compound is essential for manufacturers and R&D laboratories focused on developing novel steroid-based therapeutics, bioactive molecules, and reference standards.

Application

• Pharmaceutical Intermediate: Key starting material or intermediate in the synthesis of steroidal drugs, including hormones, anti-inflammatories, and cardiac glycosides.
• Research & Development: Used in academic and industrial research for studying steroid biosynthesis, metabolism, and structure-activity relationships (SAR).
• Reference Standard: Serves as a high-purity analytical standard for quality control and method development in pharmaceutical testing laboratories.
• Chemical Synthesis: A versatile precursor for further chemical modifications, such as reductions, oxidations, and side-chain elaborations to create novel steroidal architectures.
• Biochemical Studies: Utilized in enzymatic studies and as a probe to investigate interactions with steroid receptors and metabolizing enzymes.

Basic Information

Product Name	(25S)-5β-Spirostan-3-One
CAS No.	639-96-3
Molecular Formula	C27H42O3
Molecular Weight	414.62 g/mol
Synonyms	(25S)-5β-Spirostan-3-one; 5β-Spirostan-3-one, (25S)-; Tigogenone; (25S)-3-Oxospirostan; 3-Oxo-5β-spirostan; Tigogenin ketone; 3-Ketotigogenin; 5β,25S-Spirostan-3-one
EINECS	Contact for details

Quality Control

Our (25S)-5β-Spirostan-3-One is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, GC, and spectroscopic methods, to ensure identity, purity, and consistency. We provide full traceability and Certificates of Analysis (COA) are available for all shipments, confirming compliance with customer specifications and relevant industry standards.

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). Keep away from heat sources and incompatible materials.

Specification

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