NVP-TAE 226 is a potent FAK inhibitor with IC50 of 5.5 nM, modestly potent to Pyk2 (IC50=3.5 nM) and 10- to 100-fold less potent against InsR, IGF-1R, ALK, and c-Met.

PF-562271 HCl is the HCl salt of PF-562271, which is a potent, ATP-competitive, reversible inhibitor of FAK with IC50 of 1.5 nM, ~10-fold less potent for Pyk2 than FAK and > 100-fold selectivity against other protein kinases, except for some CDKs.