filociclovir filociclovir filociclovir (cyclopropavir, mbx-400) is an antiviral drug which was developed for the treatment of cytomegalovirus infection and also shows some activity against other double-stranded dna viruses. it has reached phase ii human clinical trials. filociclovirlegal statuslegal status us: investigational new drug identifiers iupac name 2-amino-9-methyl]-1h-purin-6-one cas number632325-71-4pubchem cid135409256chemspider2276035uniieao0td9b13keggd10632comptox dashboard (epa)dtxsid10212612 chemical and physical dataformulac11h13n5o3molar mass263.25 g·mol−13d model (jsmol)interactive image smiles c1/c(=c/n2c=nc3=c2n=c(nc3=o)n)/c1(co)co inchi inchi=1s/c11h13n5o3/c12-10-14-8-7(9(19)15-10)13-5-16(8)2-6-1-11(6,3-17)4-18/h2,5,17-18h,1,3-4h2,(h3,12,14,15,19)/b6-2-key:kmunhoktivsfra-kxfigugusa-n