CDK9-IN-2 is a potent and selective CDK9 inhibitor with IC50 of <8 nM, example 4 in patent WO2011026917A1.

CCT251545 is a potent, orally bioavailable inhibitor of Wnt signaling with IC50 of 5 nM, also is a potent and selective chemical probe for CDK8 and CDK19 with >100-fold selectivity over 291 other kinases; potently inhibits reporter-based readouts of basal WNT pathway activity in LS174T and SW480 cells in the absence of WNT ligand with IC50 of 23 and 190 nM, respectively.

MBQ-167 is a dual inhibitor of Rac/Cdc42 (IC50s: 103 nM for Rac 1/2/3 and 78 nM for Cdc42 in MDA-MB-231 cells, respectively).