clevudine clevudine clevudine (inn) is an antiviral drug for the treatment of hepatitis b (hbv). it is already approved for hbv in south korea and the philippines. it is marketed by bukwang pharmaceuticals in south korea under the tradenames levovir and revovir. clevudineclinical dataroutes ofadministrationoralatc codej05af12 (who) identifiers iupac name 1--5-methylpyrimidine- 2,4-dione cas number163252-36-6 yactive moiety: 69256-17-3 ypubchem cid73115chemspider65894 nuniiin51mvp5f1active moiety: 37f7d05anb ykeggd03537 ychemblchembl458875 nchemical and physical dataformulac10h13fn2o5molar mass260.221 g·mol−13d model (jsmol)interactive image smiles o=c/1nc(=o)n(\c=c\1c)2o((o)2f)co inchi inchi=1s/c10h13fn2o5/c1-4-2-13(10(17)12-8(4)16)9-6(11)7(15)5(3-14)18-9/h2,5-7,9,14-15h,3h2,1h3,(h,12,16,17)/t5-,6+,7-,9-/m0/s1 nkey:gbbjcstxcaqssj-xqxxsggosa-n n ny (what is this?) (verify) researchers in south korea are testing clevudine at lower doses in combination with adefovir for continued use. it is a nucleoside analog.