The molecule is a methanesulfonate (mesylate) salt prepared from equimolar amounts of nelfinavir and methanesulfonic acid. It is used for treatment of HIV and also exhibits some anticancer properties. It has a role as a HIV protease inhibitor and an antineoplastic agent. It contains a nelfinavir(1+).
(3S,4aS,8aS)-N-tert-butyl-2-[(2R,3R)-2-hydroxy-3-[(3-hydroxy-2-methylbenzoyl)amino]-4-phenylsulfanylbutyl]-3,4,4a,5,6,7,8,8a-octahydro-1H-isoquinoline-3-carboxamide;methanesulfonic acid