kp-1461 kp-1461 kp-161 is an experimental antiviral drug being studied for the treatment of hiv/aids. it belongs to the class of nucleoside reverse transcriptase inhibitors. kp-1461clinical datadrug classreverse transcriptase inhibitorlegal statuslegal status investigational identifierscas number815588-85-3pubchem cid51003457drugbank05644chemspider32702166unii3pen569tjpchemical and physical dataformulac16h23n4o6molar mass367.382 g·mol−13d model (jsmol)interactive image smiles cccccccoc(=o)nc1=ncn(c(=o)n1)2c((o2)co)o inchi inchi=1s/c16h28n4o6/c1-2-3-4-5-6-7-25-16(24)19-14-17-10-20(15(23)18-14)13-8-11(22)12(9-21)26-13/h11-13,21-22h,2-10h2,1h3,(h2,17,18,19,23,24)/t11-,12+,13+/m0/s1key:szwiafvyppmzml-ynehkirrsa-n kp-1461 is a prodrug of the active antiviral agent kp-1212.