CheckVegan

Is Dienestrol vegetarian?

Dienestrol

Vegetarian Vegetarian
Vegan Vegan

Dienestrol is a synthetic nonsteroidal estrogen of the stilbestrol group, used to treat menopausal symptoms. It is a close structural analogue of diethylstilbestrol and was marketed under names such as Synestrol and Cycladiene.

Also known as Dienoestrol, Phenol, 4,4'-(1,2-diethylidene-1,2-ethanediyl)bis-
INCI name Dienestrol
CAS number 84-17-3
EC number 201-519-7
CosIng ID 81835
Last reviewed 10 July 2026

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

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