Mifepristone is pale yellow crystalline powder with its melting point 195-198°C . It can be used as a progesterone receptor antagonist with partial agonist activity. It is also used for abortifacient. Mifepristone should be stored from 2°C to 8°C .
Mifepristone is a synthetic steroid compound used as a pharmaceutical. It is a progesterone receptor antagonist used as an abortifacient in the first months of pregnancy, and in smaller doses as an emergency contraceptive. Mifepristone is also a powerful glucocorticoid receptor antagonist, and has occasionally been used in refractory Cushing's Syndrome (due to ectopic/neoplastic ACTH/Cortisol secretion). During early trials, it was known as RU-38486 or simply RU-486, its designation at the Roussel Uclaf company, which designed the drug. The drug was initially made available in France , and other countries then followed—often amid controversy. It is marketed under tradenames Mifegyne and Mifeprex.
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