Description

17β-Hydroxy-17-Methyl-Estra-5(10),9(11)-Dien-3-One Cyclic 1,2-Ethanediyl Acetal is a high-purity, synthetic steroid intermediate of significant importance in advanced pharmaceutical research and development. This compound serves as a critical building block for the synthesis of novel steroidal drugs, offering precise structural control for medicinal chemists. It is primarily utilized by pharmaceutical manufacturers and R&D laboratories focused on developing hormone therapies, anti-inflammatory agents, and other specialized therapeutic compounds.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel steroidal active pharmaceutical ingredients (APIs) and pro-drugs.
• Research & Development: Essential building block for medicinal chemistry programs targeting hormone receptors and metabolic pathways.
• Steroid Derivative Synthesis: Used to create modified estrane derivatives with tailored biological activity for preclinical studies.
• Reference Standard: Serves as a high-purity analytical standard for quality control and method development in pharmaceutical analysis.
• Process Chemistry: Employed in route scouting and optimization for the scalable production of complex steroid molecules.

Basic Information

Item	Details
Product Name	17β-Hydroxy-17-Methyl-Estra-5(10),9(11)-Dien-3-One Cyclic 1,2-Ethanediyl Acetal
CAS No.	54690-62-9
Molecular Formula	C22H30O3
Molecular Weight	342.48 g/mol
Synonyms	17β-Hydroxy-17-methylestra-5(10),9(11)-dien-3-one cyclic ethylene acetal; 17-Methyl-17β-hydroxyestra-5(10),9(11)-dien-3-one ethylene ketal; 17β-Hydroxy-17-methylandrosta-5(10),9(11)-dien-3-one ethylene ketal; 17-Methyl-3-oxo-17β-hydroxyestra-5(10),9(11)-diene cyclic ethylene acetal; 54690-62-9; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our 17β-Hydroxy-17-Methyl-Estra-5(10),9(11)-Dien-3-One Cyclic 1,2-Ethanediyl Acetal is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, 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 controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; ensure the container is sealed tightly after each use to minimize exposure to atmospheric moisture and light.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
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.