K252c is a cell-permeable PKC inhibitor (IC50s = 2.45 and 25.7 µM for PKC and PKA, respectively). It induces apoptosis in human chronic myelogenous leukemia cancer cells. In human foreskin fibroblast cells, it reduces focus formation induced by human cytomegalovirus (HCMV) strains sensitive and resistant to Ganciclovir (Item No. 13853) with IC50s of 0.32 and 0.17 µM for HCMV A6245 and HCMV-6, respectively. It also inhibits the non-kinase enzymes β-lactamase, chymotrypsin, and malate dehydrogenase with IC50s of 8, 10, and 8 µM, suggesting less kinase-selectivity than was originally described.