SM1-71 is a potent multi-targeted acrylamide-modified TAK1 inhibitor that inhibits MKNK2, MAP2K1/2/3/4/6/7, GAK, AAK1, BMP2K, MAP3K7, MAPKAPK5, GSK3A/B, MAPK1/3, SRC, YES1, FGFR1, ZAK (MLTK), MAP3K1, LIMK1 and RSK2.SM1-71 can be used as a kinase probe with anticancer activity and inhibits the proliferation of various cancer cell lines.