Promegestone

**Definition:** A synthetic progestin which is useful for the study of progestin distribution and progestin tissue receptors, as it is not bound by transcortin and binds to progesterone receptors with a higher association constant than progesterone.

**Tree numbers:** - D04.210.500.668.651.443.680

**Synonyms:** - 17,21-Dimethyl-19-nor-4,9-pregnadiene-3,20-dione - Promestone