The present invention provides deuterated compounds having certain biological activities that include, but are not limited to, inhibiting cell proliferation, modulating protein kinase activity and modulating polymerase activity. The deuterated compounds of the invention can modulate casein kinase (CK) activity and/or poly(ADP-ribose)polymerase (PARP) activity. The invention also relates in part to methods for using such deuterated compounds as therapeutic agents.
