What Swiss multinational healthcare company, introduced the steroidal progestin, Trengestone, in 1974?
Trengestone Trengestone (INN) (brand names Reteroid, Retroid, Retrone; former developmental code name Ro 4-8347), also known as 6-chloro-6,7-didehydroretroprogesterone or 6-chloro-9β-10α-pregna-1,4,6-triene-3,20-dione, is a steroidal progestin of the retroprogesterone group related to dydrogesterone that was formerly used to treat menstrual disorders. It was synthesized in 1964 and was introduced for medical use by Roche in 1974.
Actelion Actelion is a pharmaceuticals and bio-technology company established in December 1997, headquartered in Allschwil near Basel in Switzerland. Its CEO and co-founder is cardiologist Jean-Paul Clozel.