flugestone acetate flugestone acetate flugestone acetate (fga), sold under the brand name cronolone among others, is a progestin medication which is used in veterinary medicine. flugestone acetateclinical datatrade namescronolone, othersother namesflurogestone acetate; fluorogestone acetate; fga; nsc-65411; sc-9880; 17α-acetoxy-9α-fluoro-11β-hydroxyprogesteroneroutes ofadministrationintravaginaldrug classprogestogen; progestin; progestogen esteridentifiers iupac name phenanthren-17-yl] acetate cas number2529-45-5pubchem cid10476437chemspider8651847uniix60881643xkeggd04235chemblchembl2106773comptox dashboard (epa)dtxsid6046210 echa infocard100.017.979 chemical and physical dataformulac23h31fo5molar mass406.494 g·mol−13d model (jsmol)interactive image smiles cc(=o)o1(cc23ccc4=cc(=o)cc4(c)3(f)(o)c12c)c(c)=o inchi inchi=1s/c23h31fo5/c1-13(25)22(29-14(2)26)10-8-17-18-6-5-15-11-16(27)7-9-20(15,3)23(18,24)19(28)12-21(17,22)4/h11,17-19,28h,5-10,12h2,1-4h3/t17-,18-,19-,20-,21-,22-,23-/m0/s1key:jkqqzjhnuvdhkp-fqjipjfpsa-n uses veterinary fga is used as an intravaginal sponge preparation to synchronize estrus in ewes and goats. chemistry