C188 is a cell-permeable naphthol compound and a STAT3 inhibitor. C188 inhibits IL-6-stimulated STAT3 Tyr705 phosphorylation and nuclear translocation in HepG2 cells by targeting STAT3 SH2 domain peptide-binding pocket, while exhibiting little effect agai
AP-22161 selectively binds the Src SH2 domain by targeting highly conserved phosphotyrosine binding to cysteine residues in the pocket. AP-22161 selectively inhibits Src SH2 binding and can be used to inhibit osteoclast absorption.