Description

A-Ethynodiol Diacetate is a synthetic steroid derivative with significant importance in pharmaceutical research and development. This compound serves as a key intermediate in the synthesis of various steroidal hormones and active pharmaceutical ingredients (APIs). It is primarily sought after by manufacturers and research institutions in the pharmaceutical and life sciences sectors for its role in creating therapeutic agents. The material's defined structure and purity are critical for ensuring the efficacy and safety of the final drug products.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of steroidal hormones and other active pharmaceutical ingredients (APIs).
• Contraceptive Research: Used in the development and production of hormonal contraceptives and related therapeutic agents.
• Endocrinology Studies: Serves as a reference standard or starting material in research focused on hormone-related pathways and disorders.
• Steroid Synthesis: Employed in organic synthesis for creating complex steroid molecules with potential therapeutic applications.
• Biochemical Research: Utilized in laboratory settings to study steroid metabolism, receptor binding, and biological activity.
• GMP Manufacturing: Supplied as a critical raw material for cGMP-compliant production processes in regulated pharmaceutical facilities.

Basic Information

Product Name	A-Ethynodiol Diacetate
CAS No.	61217-13-8
Molecular Formula	C24H32O4
Molecular Weight	384.51 g/mol
Synonyms	Ethynodiol Diacetate; 19-Nor-17α-pregn-4-en-20-yne-3β,17β-diol Diacetate; 17α-Ethynyl-19-norandrost-4-ene-3β,17β-diol Diacetate; 17α-Ethynyl-19-nortestosterone-3β,17β-diol Diacetate; Ethynodiol Diacetate Impurity; Lynestrenol Intermediate; Contraceptive Intermediate
EINECS	Contact for details

Quality Control

Our A-Ethynodiol Diacetate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, identity confirmation by IR and NMR spectroscopy, and residual solvent analysis. We provide full traceability and Certificates of Analysis (COA) are available for every shipment, ensuring compliance with research and pharmaceutical-grade specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed in a dry environment to prevent moisture absorption, which may affect stability and handling properties.

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%
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.