Description

Ethinyl Estriol is a synthetic estrogen derivative, a key intermediate in the development of specialized pharmaceutical compounds. Its precise molecular structure makes it valuable for research and production where specific estrogenic activity profiles are required. This compound is primarily utilized by pharmaceutical R&D laboratories and fine chemical manufacturers targeting the development of advanced hormonal therapies and diagnostic agents.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of novel steroidal drugs and hormone replacement therapies.
• Biochemical Research: Used as a reference standard or active agent in studies investigating estrogen receptor binding and signaling pathways.
• Fine Chemical Synthesis: Serves as a precursor for creating more complex, high-value estrogen analogs with tailored biological properties.
• Diagnostic Development: Potential use in the formulation of reagents for clinical assays targeting hormonal balance.

Basic Information

Product Name	Ethinyl Estriol
CAS No.	108646-70-4
Molecular Formula	C20H24O3
Molecular Weight	312.41 g/mol
Synonyms	17α-Ethynylestriol; 17α-Ethynyl-1,3,5(10)-estratriene-3,16α,17β-triol; Ethynylestriol; 1,3,5(10)-Estratrien-3,16α,17β-triol, 17α-ethynyl-; 17α-Ethynylestra-1,3,5(10)-triene-3,16α,17β-triol
EINECS	Contact for details

Quality Control

Our Ethinyl Estriol 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 the stringent requirements for pharmaceutical intermediates. Certificates of Analysis (COA) detailing all test results are available upon request to support your quality assurance and regulatory documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which may affect stability and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%

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