NorgestometNorgestomet, or norgestamet, sold under the brand name Syncro-Mate B and Crestar, is a progestin medication which is used in veterinary medicine to control estrus and ovulation in cattle.UsesVeterinaryNorgestomet is used in veterinary medicine.PharmacologyPharmacodynamicsNorgestomet is a progestogen. In addition to the progesterone receptor, it possesses weak affinity for the glucocorticoid receptor.ChemistryNorgestomet, also known as 11β-methyl-17α-acetoxy-19-norprogesterone or as 17α-hydroxy-11β-methyl-19-norpregn-4-ene-3,20-dione acetate, is a synthetic norpregnane steroid and a derivative of progesterone.HistoryNorgestomet was developed and introduced for veterinary use in the mid-1970s.Society and cultureGeneric namesNorgestomet is the generic name of the drug and its,, and. It also known as norgestamet and is known by its developmental code name SC-21009.Brand namesNorgestomet is marketed under the brand names Syncro-Mate B and Crestar.