CheckVegan

Is Quinestrol vegetarian?

Quinestrol

Vegetarian Vegetarian
Vegan Vegan

Quinestrol is a synthetic estrogen medication, chemically the cyclopentyl ether of ethinylestradiol, which has been used in menopausal hormone therapy and hormonal contraception. It is taken orally on a weekly to monthly basis.

Also known as 19-Norpregna-1,3,5(10)-trien-20-yn-17-ol, 3-(cyclopentyloxy)-, (17alpha)-, Ethinylestradiol cyclopentyl ether
INCI name Quinestrol
CAS number 152-43-2
EC number 205-803-1
CosIng ID 81849
Last reviewed 10 July 2026

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

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