Description

17A-Pregn-5-En-20-Yne-3B,17-Diol CAS NO 3604-60-2 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 drugs and active pharmaceutical ingredients (APIs). It is primarily required by research institutions and manufacturers in the pharmaceutical and biotechnology sectors for the production of hormone-based therapeutics and for use in advanced chemical research.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of steroidal hormones and related therapeutic agents.
• API Development: Used in research and development for creating new active pharmaceutical ingredients with targeted biological activity.
• Biochemical Research: Employed as a standard or reagent in metabolic pathway studies and endocrinology research.
• Fine Chemical Synthesis: Serves as a specialized building block for constructing complex molecular architectures in organic chemistry.
• Reference Standard: Utilized in analytical laboratories for method development, calibration, and quality control testing of related compounds.

Basic Information

Product Name	17A-Pregn-5-En-20-Yne-3B,17-Diol
CAS No.	3604-60-2
Molecular Formula	C21H30O2
Molecular Weight	314.46 g/mol
Synonyms	17α-Pregn-5-en-20-yne-3β,17-diol; 17α-Ethynyl-5-androstene-3β,17β-diol; 3β,17α-Dihydroxy-17α-pregn-5-en-20-yne; 17α-Ethynyl-3β,17β-dihydroxyandrost-5-ene; 17α-Ethynyl-5-androstene-3β,17β-diol; 17α-Pregna-5,20-dien-3β-ol; 17α-Ethynyl-δ5-androstenediol
EINECS	Contact for details

Quality Control

Our 17A-Pregn-5-En-20-Yne-3B,17-Diol is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency, meeting the high standards required for pharmaceutical R&D and synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment and is available upon request.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Single Unknown Impurity	≤ 0.5%

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