PF-00562271是PF-562271的苯磺酸盐，是一种有效的，ATP竞争性，可逆的FAK抑制剂，IC50为1.5 nM，作用于Pyk2比作用于FAK效果低10倍左右，比作用于其他蛋白激酶（除了一些CDKs）选择性高100倍以上。 PF-00562271 is the benzenesulfonate 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. A potent inhibitor of focal adhesion kinase (FAK) and Pyk2.