Description

17β-Acetyloxyestr-5-En-3-One Ethylene Acetal is a high-purity steroid intermediate of significant importance in pharmaceutical synthesis. This compound matters as a critical building block for the production of more complex steroidal active pharmaceutical ingredients (APIs). It is primarily needed by research institutions and manufacturers in the pharmaceutical and fine chemical industries for the development and commercial-scale production of steroid-based therapeutics.

Application

• Pharmaceutical Intermediate: A key precursor in the multi-step synthesis of steroidal hormones and related APIs.
• Steroid Research & Development: Used as a standard or starting material in medicinal chemistry for creating novel steroid analogs.
• Fine Chemical Synthesis: Employed in custom synthesis and contract manufacturing for specialized chemical production.
• Reference Standard: Serves as a high-purity analytical standard for quality control and method development in laboratories.

Basic Information

Product Name	17β-Acetyloxyestr-5-En-3-One Ethylene Acetal
CAS No.	21528-89-2
Molecular Formula	C25H36O4
Molecular Weight	400.56 g/mol
Synonyms	17β-Acetoxy-3,3-ethylenedioxyandrost-5-ene; 3,3-Ethylenedioxy-17β-acetoxyandrost-5-ene; 17β-Acetoxyandrost-5-ene-3-one ethylene acetal; Androst-5-ene-3,17-diol, 17-acetate, 3-(ethylenedioxy)-, (17β)-; 17β-Hydroxyandrost-5-en-3-one 17-acetate 3-ethylene acetal; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our 17β-Acetyloxyestr-5-En-3-One Ethylene Acetal is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation (IR), to ensure it meets exacting standards for pharmaceutical intermediate applications. A detailed Certificate of Analysis (COA) is provided with every shipment to guarantee traceability, consistency, and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from heat sources and incompatible materials. This product is light-sensitive and should be stored away from light.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
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.