norgestomet norgestomet norgestomet, 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. not to be confused with norgestimate. norgestometclinical datatrade namessyncro-mate b, crestarother namesnorgestamet; sc-21009; 11β-methyl-17α-acetoxy-19-norprogesterone; 17α-hydroxy-11β-methyl-19-norpregn-4-ene-3,20-dione acetatedrug classprogestogen; progestin; progestogen esteridentifiers iupac name phenanthren-17-yl] acetate cas number25092-41-5pubchem cid9820838chemspider7996587unii3l33ud42x4echa infocard100.042.359 chemical and physical dataformulac23h32o4molar mass372.505 g·mol−13d model (jsmol)interactive image smiles cc1cc2(c(ccc2(c(=o)c)oc(=o)c)c3c1c4ccc(=o)c=c4cc3)c inchi inchi=1s/c23h32o4/c1-13-12-22(4)20(9-10-23(22,14(2)24)27-15(3)25)19-7-5-16-11-17(26)6-8-18(16)21(13)19/h11,13,18-21h,5-10,12h2,1-4h3/t13-,18-,19-,20-,21+,22-,23-/m0/s1key:iwsxbczcpvuwht-vifktucrsa-n uses veterinary norgestomet is used in veterinary medicine. pharmacology pharmacodynamics norgestomet is a progestogen. in addition to the progesterone receptor, it possesses weak (micromolar) affinity for the glucocorticoid receptor. chemistry