Description

19-Nor-17-α-Pregna-3,5-Dien-20-Yne-3,17-Diol, Diacetate is a high-purity steroid intermediate of significant importance in pharmaceutical synthesis. This compound serves as a critical building block for the development of advanced steroidal active pharmaceutical ingredients (APIs). It is primarily utilized by research institutions and manufacturers in the pharmaceutical and biotechnology sectors for the production of novel therapeutic agents.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of steroidal hormones and related APIs.
• Research & Development: Used in medicinal chemistry for the discovery and development of new drug candidates targeting hormone receptors.
• Process Chemistry: Employed in scale-up and optimization of synthetic routes for commercial pharmaceutical manufacturing.
• Reference Standard: Serves as an analytical standard for quality control and regulatory compliance in API production.

Basic Information

Product Name	19-Nor-17-α-Pregna-3,5-Dien-20-Yne-3,17-Diol, Diacetate
CAS No.	2205-78-9
Molecular Formula	C25H32O4
Molecular Weight	396.52 g/mol
Synonyms	19-Nor-17α-pregna-3,5-dien-20-yne-3,17-diol diacetate; 3,17-Diacetoxy-19-nor-17α-pregna-3,5-dien-20-yne; 19-Nor-17α-ethynyltestosterone 3,17-diacetate; 17α-Ethynyl-19-nortestosterone 3,17-diacetate; 19-Nor-17α-ethynyl-4-androstene-3β,17β-diol diacetate; Norethisterone acetate intermediate; 19-Nor-17α-pregna-3,5-dien-20-yn-3,17-diol diacetate
EINECS	Contact for details

Quality Control

Our 19-Nor-17-α-Pregna-3,5-Dien-20-Yne-3,17-Diol, Diacetate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation (IR, NMR), to ensure it meets the stringent requirements for pharmaceutical intermediates. Certificates of Analysis (COA) documenting full specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to maintain stability and purity.

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%
Any single impurity	≤ 1.0%
Loss on Drying	≤ 0.5%

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