Saracatinib is Src inhibitor with IC50 of 2.7 nM.

PP2 is a ATP-competitive inhibitor of the Src family of protein tyrosine kinases. The IC50s for p56lck, p59fynT, Hck, Src are 4 nM, 5 nM, 5 nM, 100 nM, respectively.

PP1 is a selective inhibitor of Src and Lck/Fyn with IC50 of 5 nM, 6 nM, respectively.

SU 6656 is an inhibitor of Src kinases and can target Src, Yes, Lyn, and Fyn with IC50 of 280 nM, 20 nM, 130 nM, 170 nM, respectively.