Description

(17α)-13-Ethyl-18,19-Dinorpregna-3,5(10)-Dien-20-Yne-3,17-Diol Diacetate CAS NO 62855-59-8 is a high-purity steroid derivative, specifically a diacetylated ethynyl estradiol analog, valued for its role as a critical pharmaceutical intermediate. Its precise chemical structure makes it essential for the synthesis of advanced steroidal active pharmaceutical ingredients (APIs) and reference standards. This compound is primarily required by research institutions and pharmaceutical manufacturers engaged in the development and production of hormonal therapies and diagnostic agents.

Application

• Pharmaceutical Intermediate: A key building block in the multi-step synthesis of steroidal drugs and novel hormonal compounds.
• Active Pharmaceutical Ingredient (API) Development: Serves as a precursor in the research and production of estradiol-based APIs for therapeutic applications.
• Reference Standard: Used as a high-purity analytical standard in quality control laboratories for method development, validation, and compound identification.
• Biochemical Research: Employed in academic and industrial research to study steroid hormone receptors, metabolic pathways, and structure-activity relationships (SAR).
• Contraceptive Formulation R&D: Investigated as an intermediate in the development of new-generation hormonal contraceptives.

Basic Information

Product Name	(17α)-13-Ethyl-18,19-Dinorpregna-3,5(10)-Dien-20-Yne-3,17-Diol Diacetate
CAS No.	62855-59-8
Molecular Formula	C26H32O4
Molecular Weight	408.53 g/mol
Synonyms	13-Ethyl-18,19-dinorpregna-3,5(10)-dien-20-yne-3,17-diol diacetate; 17α-Ethynylestradiol 3,17-diacetate; Ethynylestradiol Diacetate; EE Diacetate; 19-Nor-17α-pregna-1,3,5(10)-trien-20-yne-3,17-diol diacetate; 17α-Ethynyl-1,3,5(10)-estratriene-3,17β-diol diacetate
EINECS	Contact for details

Quality Control

Our (17α)-13-Ethyl-18,19-Dinorpregna-3,5(10)-Dien-20-Yne-3,17-Diol Diacetate is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the stringent requirements for pharmaceutical intermediates and research chemicals. Certificates of Analysis (COA) detailing all specifications and test results are provided and available upon request.

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, open flames, and incompatible materials. Due to its light-sensitive nature, handling and storage should minimize exposure to direct light.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥98.0%
Related Substances (HPLC)	Total impurities ≤2.0%
Single Maximum Impurity	≤0.5%
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.