Patent ID: 8252805

Claim:
A crystalline form of lapatinib ditosylate (Form XIII) characterized by data selected from the group consisting of a PXRD pattern having peaks at about 5.9, 6.8, and 8.9±0.2 degrees 2-theta, and at least two peaks from the following list: 12.2, 13.5, 16.0, 18.7 and 22.9±0.2 degrees 2-theta; a PXRD pattern having peaks at about 5.9, 6.8, 8.9, 12.2 and 13.6±0.2 degrees 2-theta; a PXRD pattern having peaks at about 5.9, 6.8, 8.9, 12.2, 13.6, 14.6, 16.0, 19.0, 20.4 and 22.9±0.2 degrees 2-theta; a solid-state 13 C NMR spectrum having signals at about 125.1, 129.6 and 150.7±0.2 ppm; and a solid-state 13 C NMR spectrum having chemical shifts differences between the signal exhibiting the lowest chemical shift and another in the chemical shift range of 100 to 180 ppm of about 17.2, 21.7 and 42.8±0.1 ppm, wherein the signal exhibiting the lowest chemical shift in the chemical shift area of 100 to 180 ppm is typically at about 107.9±1 ppm.