Description

9,11-Dehydro Ethynyl Estradiol is a synthetic steroidal estrogen derivative, structurally related to ethynyl estradiol. This compound serves as a critical intermediate in the research and development of novel pharmaceutical agents, particularly in the field of endocrinology and hormone therapy. It is primarily utilized by research institutions and pharmaceutical manufacturers engaged in the synthesis of steroidal drugs and the study of estrogen receptor activity.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of advanced steroidal active pharmaceutical ingredients (APIs).
• Research & Development: Used in biochemical and pharmacological research to study estrogenic activity and metabolic pathways.
• Reference Standard: Serves as a high-purity analytical standard for quality control and method validation in pharmaceutical analysis.
• Chemical Synthesis: Employed in organic synthesis for creating novel steroid analogs with potential therapeutic applications.

Basic Information

Product Name	9,11-Dehydro Ethynyl Estradiol
CAS No.	1231-96-5
Molecular Formula	C20H24O2
Molecular Weight	296.41 g/mol
Synonyms	19-Nor-17α-pregna-1,3,5(10),9(11)-tetraene-20-yne-3,17-diol; δ9(11)-Ethynylestradiol; 17α-Ethynyl-1,3,5(10),9(11)-estratetraene-3,17β-diol; 9,11-Dehydro-17α-ethynylestradiol; 9(11)-Dehydroethynylestradiol; 17α-Ethynylestra-1,3,5(10),9(11)-tetraene-3,17β-diol
EINECS	Contact for details

Quality Control

Our 9,11-Dehydro Ethynyl Estradiol is manufactured 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 high standards required for pharmaceutical research. Certificates of Analysis (COA) with detailed chromatographic data are provided for every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). The product is light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
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.