Lapatinib ditosylate monohydrate

CC1=CC=C (C=C1) S (=O) (=O) O.CC1=CC=C (C=C1) S (=O) (=O) O.CS (=O) (=O) CCNCC1=CC=C (O1) C2=CC3=C (C=C2) N=CN=C3NC4=CC (=C (C=C4) OCC5=CC (=CC=C5) F) Cl.O

Lapatinib ditosylate monohydrate (Lapatinib ditoluenesulfonate monohydrate, Lapatinib tosilate, Lapatinib tosilate hydrate) is a dual tyrosine kinase inhibitor which interrupts the HER2/neu and epidermal growth factor receptor (EGFR) pathways, used for treatment of solid tumours such as breast and lung cancer.