anagestone acetate anagestone acetate anagestone acetate, sold under the brand names anatropin and neo-novum, is a progestin medication which was withdrawn from medical use due to carcinogenicity observed in animal studies. anagestone acetateclinical datatrade namesanatropin, neo-novumother namesorf-1658; anapregnone acetate; 3-deketo-6α-methyl-17α-acetoxyprogesterone; 6α-methyl-17α-hydroxypregn-4-en-20-one acetateroutes ofadministrationby mouthdrug classprogestogen; progestin; progestogen esteridentifiers iupac name phenanthren-17-yl] acetate cas number3137-73-3pubchem cid252301chemspider221058uniignt396g9qtcomptox dashboard (epa)dtxsid50953411 echa infocard100.019.578 chemical and physical dataformulac24h36o3molar mass372.549 g·mol−13d model (jsmol)interactive image smiles c1c2(cc3(2cc3(c(=o)c)oc(=o)c)c)4(c1=cccc4)c inchi inchi=1s/c24h36o3/c1-15-14-18-20(22(4)11-7-6-8-19(15)22)9-12-23(5)21(18)10-13-24(23,16(2)25)27-17(3)26/h8,15,18,20-21h,6-7,9-14h2,1-5h3/t15-,18+,20-,21-,22-,23-,24-/m0/s1key:kdlnoqqqebkbqm-dicptymlsa-n medical uses anagestone acetate was used in combination with the estrogen mestranol as a combined birth control pill. pharmacology based on its chemical structure, namely the lack of a c3 ketone, it is probable that anagestone acetate is a prodrug of medroxyprogesterone acetate (the 3-keto analogue). chemistry