Description

Ethisterone is a synthetic progestogen steroid hormone, also known as anhydrohydroxyprogesterone. This compound is a key pharmaceutical intermediate and active pharmaceutical ingredient (API) with significant historical and ongoing importance in hormonal therapy. It is primarily utilized in the research, development, and manufacturing of steroid-based medications. Industries requiring high-purity steroid intermediates, such as pharmaceutical synthesis and advanced chemical research, rely on a consistent and reliable supply of this material.

Application

• Pharmaceutical Intermediate: A crucial building block in the multi-step synthesis of more complex steroidal drugs and hormones.
• Progestogen Research: Used in biochemical and pharmacological studies to investigate progestogenic activity and receptor binding.
• Reference Standard: Serves as a certified reference material (CRM) for quality control and analytical method development in pharmaceutical laboratories.
• Hormone Therapy Development: A foundational compound for developing and testing formulations for hormonal regulation and related therapeutic areas.
• Academic & Industrial R&D: Employed in universities and corporate R&D departments for exploring new synthetic pathways and steroid derivatives.

Basic Information

Product Name	Ethisterone
CAS No.	434-03-7
Molecular Formula	C21H28O2
Molecular Weight	312.45 g/mol
Synonyms	17α-Ethynyltestosterone; Anhydrohydroxyprogesterone; Pregneninolone; Ethinyltestosterone; 17α-Ethynyl-4-androstene-17β-ol-3-one; 17-Hydroxy-17α-pregn-4-en-20-yn-3-one; NSC-9565; Pranone
EINECS	207-104-5

Quality Control

Our Ethisterone is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide full traceability and support regulatory documentation needs. Certificates of Analysis (COA) detailing specific results for purity, related substances, and residual solvents are available upon request.

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 incompatible materials and sources of ignition.

Specification

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