17α-methyl-19-norprogesterone 17α-methyl-19-norprogesterone 17α-methyl-19-norprogesterone (developmental code name h-3510), also known as 17α-methyl-19-norpregn-4-ene-3,20-dione, is a progestin which was never marketed. it is a derivative of progesterone, and is the combined derivative of 17α-methylprogesterone and 19-norprogesterone. the drug is the parent compound of a subgroup of the 19-norprogesterone group of progestins, which includes demegestone (the δ9 derivative), promegestone (the δ9 and 21-methyl derivative), and trimegestone (the δ9, 21-methyl, and 21-hydroxyl derivative). 17α-methyl-19-norprogesteroneclinical dataother namesh-3510; 17α-methyl-19-norpregn-4-ene-3,20-dione; (17β)-17-acetyl-17-methylestr-4-en-3-onedrug classprogestin; progestogenidentifierschemspider34253447chemical and physical dataformulac21h30o2molar mass314.469 g·mol−13d model (jsmol)interactive image smiles o=c(c)(c)1cc()2()3ccc4=cc(ccc4c3cc21c)=o inchi inchi=1s/c21h30o2/c1-13(22)20(2)11-9-19-18-6-4-14-12-15(23)5-7-16(14)17(18)8-10-21(19,20)3/h12,16-19h,4-11h2,1-3h3/t16-,17+,18+,19-,20+,21-/m0/s1key:smhqtbxjlxzknt-vxaanuecsa-n