Roscovitine is a potent and selective CDK inhibitor for Cdc2, CDK2 and CDK5 with IC50 of 0.65 μM, 0.7 μM and 0.16 μM and shows little effect on CDK4/6.

SNS-032 is a potent inhibitor of cyclin-dependent kinases (CDKs)9, 2 and 7 (IC50 values are 4, 38 and 62 nM respectively).

Dinaciclib is a potent CDK inhibitor for CDK2, CDK5, CDK1 and CDK9 with IC50 of 1 nM, 1 nM, 3 nM and 4 nM, respectively.

AT7519 is a pan-CDKs inhibitor with IC50 values of 47, 13, <10nM for CDK2/CyclinA, CDK5/p35 and CDK9/CyclinT, and modest activity against CDK1/CyclinB, CDK3/CyclinE, CDK4/CyclinD1 and CDK6/CyclinD3 with IC50 values of 210, 360, 100 and 170nM, respectively.

PHA-793887 is a pan-cdk inhibitor, inhibits cdk1/2/4/5/7/9 with IC50s of 5 - 140 nM.

PHA-767491 HCl is a potent and ATP-competitive cyclin-dependent kinase (cdk) inhibitor with IC50 values of 10/34 nM for Cdc7/Cdk9.

PHA-848125 is a potent, ATP-competitive CDK inhibitor for CDK2 with IC50 of 45 nM, being > 3-fold selective for CDK2 than CDK1, 2, 4, 5, and 7.

Kenpaullone is an ATP-competitive inhibitor of CDK1/cyclin B (IC50 = 0.4 µM), CDK2/cyclin A (IC50 = 0.68 µM), CDK5/p25 (IC50 = 0.85 µM), lymphocyte kinase (IC50 = 0.47 µM) , and GSK-3β (C50 = 0.23 μM).