CID-755673 is a selective small molecule inhibitor of protein kinase D (PKD) (IC50s = 182, 280, 227 nM for PKD1, 2, and 3, respectively). It exhibits higher selectivity for PKD over Akt, polo-like kinase 1, CDK activating kinase, CAMKII and three different PKC isoforms (IC50s range from 15 to > 50 μM). At 25 μM, CID-755673 has been shown to inhibit prostate cancer cell proliferation, cell migration, and invasion. MW: 217.22. Purity ≥98% by HPLC