Description

17-Ethinylandrost-5-Ene-3,17-Diol is a high-purity steroid intermediate with significant synthetic utility. This compound is valued for its role as a versatile building block in the production of more complex active pharmaceutical ingredients (APIs) and fine chemicals. It is primarily sought after by manufacturers in the pharmaceutical, biotechnology, and advanced research sectors for the development of steroidal drugs and novel therapeutic agents.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of steroidal hormones and other bioactive molecules.
• Research & Development: Used in academic and industrial laboratories for medicinal chemistry and biochemical research.
• Fine Chemical Synthesis: Serves as a building block for creating complex, high-value specialty chemicals.
• API Manufacturing: Integral to the production chain of various Active Pharmaceutical Ingredients (APIs).
• Bioconjugation Studies: Potential use in creating labeled compounds for diagnostic or research purposes.

Basic Information

Product Name	17-Ethinylandrost-5-Ene-3,17-Diol
CAS No.	5173-84-2
Molecular Formula	C21H30O2
Molecular Weight	314.46 g/mol
Synonyms	17α-Ethynyl-5-androstene-3β,17β-diol; 17α-Ethynyl-3β,17β-dihydroxyandrost-5-ene; 17-Ethynyl-5-androstene-3β,17β-diol; 17α-Ethynyl-3β,17β-dihydroxy-5-androstene; Ethynyl Androstenediol; 17-Ethynyl Androstenediol; 17α-Ethynyl-androst-5-ene-3β,17β-diol
EINECS	Contact for details

Quality Control

Our 17-Ethinylandrost-5-Ene-3,17-Diol is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation (IR), to ensure it meets the high standards required for pharmaceutical and research applications. Certificates of Analysis (COA) are provided with every shipment and are 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 nature, the container must be kept tightly sealed to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
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.