Description

3-Oxidido 17-α-Ethynyl 17-β-Hydroxy Estra-4,9,11-Triene is a high-purity synthetic steroid derivative with a complex, modified estrane structure. This compound is of significant interest for advanced pharmaceutical research and development, particularly in the study of hormone receptor modulation. It is primarily utilized by R&D laboratories and fine chemical manufacturers serving the life sciences sector.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel steroidal active pharmaceutical ingredients (APIs) and investigational drugs.
• Biochemical Research: Used as a reference standard or precursor in studies involving estrogen receptor biology and steroid metabolism pathways.
• Hormone Analog Development: Serves as a core structure for developing new compounds with potential therapeutic applications in endocrinology.
• Fine Chemical Synthesis: Employed in multi-step organic synthesis for creating specialized, high-value chemical entities.

Basic Information

Product Name	3-Oxidido 17-α-Ethynyl 17-β-Hydroxy Estra-4,9,11-Triene
CAS No.	19636-23-8
Molecular Formula	C20H24O2
Molecular Weight	296.41 g/mol
Synonyms	17α-Ethynyl-17β-hydroxyestra-4,9,11-trien-3-one; 17α-Ethynylestra-4,9,11-triene-3,17β-diol 3-methyl ether; δ4,9,11-Estratriene-3,17β-diol, 17α-ethynyl-, 3-methyl ether; 17α-Ethynyl-3-methoxyestra-4,9,11-trien-17β-ol; 3-Methoxy-17α-ethynylestra-4,9,11-trien-17β-ol
EINECS	Contact for details

Quality Control

Our 3-Oxidido 17-α-Ethynyl 17-β-Hydroxy Estra-4,9,11-Triene is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure it meets exacting standards for research use. Certificates of Analysis (COA) with batch-specific data are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). Keep the container sealed in a dry, inert atmosphere to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Purity (HPLC)	≥ 98.0%
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.