Ethinyl Estradiol

Molecular Formula
C20H24O2
Catalog Number
E1250
Supplier/Brand
Spectrum Chemical
CAS Number
57-63-6

Ethinyl Estradiol, also known as 17-alpha-ethinyl-17-beta-estradiol, is used in several types of combined oral contraceptive pills. Ungraded products supplied by Spectrum are indicative of a grade suitable for general industrial use or research purposes and typically are not suitable for human consumption or therapeutic use.


Synonyms: Ethinyloestradiol ; 17-Ethynylestradiol ; 17alpha-Ethynylestra-1,3,5(10)-triene-3,17Beta-diol

Shipping Information


Tariff No. 2937235010

prop65WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Storage Information

LIGHT SENSITIVE: Keep tightly closed in light-resistant containers.

Certificates of Analysis

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2023