Description

(25R)-5α-Spirostan-3-One 1,2-Ethanediyl Acetal is a high-purity, specialized steroid derivative used as a critical intermediate in advanced organic synthesis. This compound is valued for its defined stereochemistry and functional group, which enables precise chemical transformations in complex molecule construction. It is primarily required by research institutions and pharmaceutical manufacturers engaged in the development of novel steroid-based therapeutics and fine chemicals.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel steroid-based active pharmaceutical ingredients (APIs) and drug candidates.
• Steroid Chemistry Research: Used in academic and industrial R&D for studying structure-activity relationships and developing new synthetic methodologies.
• Fine Chemical Synthesis: Serves as a precursor for the production of other high-value, complex steroidal compounds and specialty chemicals.
• Reference Standard: Can be utilized as an analytical standard for quality control and method development in steroid analysis.

Basic Information

Product Name	(25R)-5α-Spirostan-3-One 1,2-Ethanediyl Acetal
CAS No.	55028-79-0
Molecular Formula	C29H44O5
Molecular Weight	472.66 g/mol
Synonyms	(25R)-Spirostan-3-one ethylene acetal; 5α-Spirostan-3-one, cyclic 1,2-ethanediyl acetal, (25R)-; 3-Keto-5α-spirostan ethylene ketal; (25R)-5α-Spirostane-3-one ethylene ketal; 55028-79-0; Spirostan-3-one ethylene acetal derivative; 3,3-Ethylenedioxy-5α-spirostan
EINECS	Contact for details

Quality Control

Our (25R)-5α-Spirostan-3-One 1,2-Ethanediyl Acetal is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high chemical purity and structural identity. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee traceability and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Keep the container sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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