formocortal formocortal formocortal (inn), also known as fluoroformylone, is a corticosteroid used in dermatology and ophthalmology. formocortalclinical dataother names3-(2-chloroethoxy)-6-formyl-9α-fluoropregna-3,5-diene-11β,16α,17,21-tetrol-20-one 21-acetateatc codes01ba12 (who) identifiers iupac name 2-icosa-16,18-dien-8-yl]-2-oxoethyl acetate cas number2825-60-7 ypubchem cid17794drugbankdb13664 ychemspider254985 nunii8e21r0z4m5keggd04244chemical and physical dataformulac29h38clfo8molar mass569.06 g·mol−13d model (jsmol)interactive image smiles cc(=o)occ(=o)12(c31(c(4(3cc(=c54(ccc(=c5)occcl)c)c=o)f)o)c)oc(o2)(c)c inchi inchi=1s/c29h38clfo8/c1-16(33)37-15-23(35)29-24(38-25(2,3)39-29)12-20-21-10-17(14-32)19-11-18(36-9-8-30)6-7-26(19,4)28(21,31)22(34)13-27(20,29)5/h11,14,20-22,24,34h,6-10,12-13,15h2,1-5h3/t20-,21-,22-,24+,26-,27-,28-,29+/m0/s1 nkey:qnxuubbkhbyrfw-qwapgegqsa-n n ny (what is this?) (verify) it was introduced in around 1970 and is not known to be marketed as of 2021.