Description

17-Hydroxy-19-Nor-17Alpha-Pregna-4,9,11-Trien-20-Yn-3-One is a high-purity synthetic steroid intermediate of significant importance in pharmaceutical research and development. Its unique steroidal structure makes it a critical building block for the synthesis of more complex active pharmaceutical ingredients (APIs). This compound is primarily sought after by R&D laboratories and manufacturers in the pharmaceutical and fine chemical industries for the development of novel therapeutic agents.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of steroidal drugs and hormones.
• Research & Development: Used in academic and industrial laboratories for pharmacological studies and new drug discovery.
• Fine Chemical Synthesis: Serves as a building block for creating complex, high-value organic molecules.
• Reference Standard: Employed as an analytical standard in quality control and method development for related compounds.

Basic Information

Product Name	17-Hydroxy-19-Nor-17Alpha-Pregna-4,9,11-Trien-20-Yn-3-One
CAS No.	848-21-5
Molecular Formula	C20H24O2
Molecular Weight	296.41 g/mol
Synonyms	19-Nor-17α-pregna-4,9,11-trien-20-yn-3-one, 17-hydroxy-; 17α-Ethynyl-17β-hydroxyestr-4,9,11-trien-3-one; 17α-Ethynyl-17β-hydroxy-19-norandrosta-4,9,11-trien-3-one; 17β-Hydroxy-17α-ethynylestr-4,9,11-trien-3-one; 17α-Ethynyl-17β-hydroxy-19-norpregna-4,9,11-trien-3-one; 17-Hydroxy-19-nor-17α-pregna-4,9,11-trien-20-yn-3-one; Tibolone Impurity; Tibolone Intermediate
EINECS	Contact for details

Quality Control

Our 17-Hydroxy-19-Nor-17Alpha-Pregna-4,9,11-Trien-20-Yn-3-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for pharmaceutical R&D. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time corresponds to reference standard
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.