Description

(5S,8R,9S,10S,13S,14S)-10,13-Dimethyl-3-oxohexadecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate is a high-purity steroidal intermediate with the CAS number 95119-04-3. This compound is a critical building block in the synthesis of complex steroid-based pharmaceuticals and fine chemicals, offering a defined stereochemistry essential for producing active pharmaceutical ingredients (APIs). It is primarily required by research institutions and manufacturers in the pharmaceutical, biotechnology, and advanced chemical synthesis sectors.

Application

• Pharmaceutical Intermediate: A key chiral precursor in the multi-step synthesis of steroidal drugs, including corticosteroids and hormone therapies.
• Biochemical Research: Used as a reference standard or starting material in metabolic pathway studies and steroid receptor research.
• Fine Chemical Synthesis: Employed in the development of novel chemical entities (NCEs) and specialty compounds for agrochemical or material science applications.
• Process Development: Serves as a model compound for optimizing catalytic hydrogenation, oxidation, and other stereoselective reactions.

Basic Information

Product Name	(5S,8R,9S,10S,13S,14S)-10,13-Dimethyl-3-oxohexadecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate
CAS No.	95119-04-3
Molecular Formula	C23H36O3
Molecular Weight	360.54 g/mol
Synonyms	17β-Acetoxy-5β-androstan-3-one; 5β-Androstan-3-one, 17β-acetoxy-; 17β-Hydroxy-5β-androstan-3-one acetate; 5β-Androstane-3,17-dione, 17-monoacetate; 17-Acetoxy-5β-androstan-3-one; 5β-Androstan-17β-ol-3-one acetate; 3-Oxo-5β-androstan-17β-yl acetate
EINECS	Contact for details

Quality Control

Our (5S,8R,9S,10S,13S,14S)-10,13-Dimethyl-3-oxohexadecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate is manufactured under strict quality management systems. The product undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high chemical purity and stereochemical integrity. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each batch to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, open flames, and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Specific Rotation	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%, Total impurities ≤ 1.5%

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