Potent and selective, ATP-competitive inhibitor of death-associated protein kinase 1 (DAPK1) (IC50 values are 69 and 225 nM for DAPK1 and DAPK3 respectively, when assayed with 10 μM ATP). Displays selectivity for DAPK1 over a range of 48 other kinases, including Abl, AMPK, Chk1, Met and Src (IC50 > 10 μM).