Lapatinib-13C2,15N Ditosylate is the 13C- and 15N-labeled Lapatinib ditosylate (HY-50898A). Lapatinib ditosylate (GW572016 ditosylate) is a potent inhibitor of the ErbB-2 and EGFR tyrosine kinase domains with IC50 values against purified EGFR and ErbB-2 of 10.2 and 9.8 nM, respectively[1].
