Lapatinib tosylate (GW572016), a robust and orally administered inhibitor specifically targeting the tyrosine kinase domains of ErbB-2 and EGFR, exhibits inhibitory concentration 50 (IC50) values of 10.2 nM and 9.8 nM against purified EGFR and ErbB-2, respectively.

Dantrolene sodium (Lapatinib ditosylate monohydrate) salt is a skeletal muscle relaxant and can interfere with excitation-contraction coupling in the muscle fiber. It is used for the treatment of spasticity and other neuromuscular abnormalities. Its mechanism of action is may not central, but dantrolene is usually grouped with the central muscle relaxants.

Lapatinib Ditosylate (Tykerb ditosylate) is an effective EGFR and ErbB2 inhibitor (IC50: 10.8/9.2 nM for EGFR/ErbB2).

Lapatinib-d4 is a deuterated compound of Lapatinib. Lapatinib has a CAS number of 231277-92-2. Lapatinib is a dual inhibitor of Lapatinib is a dual ErbB2/EGFR (IC50: 9.2/10.8 nM) inhibitor

Lapatinib (GW572016) is an inhibitor of ErbB2 and EGFR (IC50=9.2/10.8 nM) with oral activity. Lapatinib has antitumor activity and can be used to treat advanced or metastatic breast cancer with HER2 overexpression.

Lapatinib ditosylate (Lapatinib tosilate) monohydrate is a tyrosine kinase receptor inhibitor used in the therapy of advanced breast cancer and other solid tumors. Lapatinib ditosylate monohydrate therapy is associated with transient elevations in serum aminotransferase levels and rare instances of clinically apparent acute liver injury.