Lapatinib ditosylate benzenesulfonic acid: N-[3-chloro-4-[(3-fluorophenyl)methoxy]phenyl]-6 -[5-[(2-methylsulfonylethylamino)methyl]-2-furyl]quinazolin-4-amine: h ydrate N-(3-Chloro-4-((3-fluorophenyl)methoxy)phenyl)-6-(5-(((2-(methylsulfonyl)ethyl)amino)methyl)-2-furanyl)-4-quinazolinamine bis(4-methylbenzenesulfonate) Lapatinib Ditosilate Lapatinib, Tykerb, GW572016 Lapatinib Ditosylate (GW-572016) lapatinib(GW572016) Lapatinib ditosylate hydrate