Description

(Z)-5α-Pregn-17(20)-Ene is a high-purity steroid intermediate with a defined stereochemistry at the 5-position. This compound matters as a critical building block in the synthesis of more complex steroid-based active pharmaceutical ingredients (APIs) and fine chemicals. It is primarily needed by pharmaceutical R&D laboratories, contract manufacturing organizations (CMOs), and fine chemical producers specializing in hormone-related therapies and advanced organic synthesis.

Application

• Pharmaceutical Intermediate: A key chiral precursor in the synthesis of steroidal drugs, including certain corticosteroids and hormonal agents.
• Research & Development: Used in academic and industrial research for studying steroid metabolism, receptor binding, and developing novel therapeutic compounds.
• Fine Chemical Synthesis: Serves as a versatile starting material for creating custom steroid derivatives and specialty chemicals.
• Reference Standard: Employed as an analytical standard in quality control laboratories for method development and impurity profiling.

Basic Information

Product Name	(Z)-5α-Pregn-17(20)-Ene
CAS No.	14964-36-4
Molecular Formula	C21H34
Molecular Weight	286.50 g/mol
Synonyms	5α-Pregn-17(20)-ene; (17Z)-5α-Pregn-17(20)-ene; 17(20)-Dehydro-5α-pregnane; NSC 84566; 5α-Pregnane-17(20)-ene
EINECS	Contact for details

Quality Control

Our (Z)-5α-Pregn-17(20)-Ene is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing specifications such as assay, related substances, and residual solvents is provided with every shipment 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 controlled room temperature (15-25°C). Keep the container tightly sealed to prevent contamination and moisture absorption.

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%

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