GW814408X is a kinase chemical genome group (KCGS) compound that inhibits the AURKC kinase involved in cell cycle progression, checkpoint regulation, and cell division. GW814408X exhibits cell line-dependent toxicity, e.g., cytotoxic effects on HeLa cells. GW814408X acts as a protein kinase inhibitor across ATP-dependent and -independent luciferases with potential implications for Fluc reporter assays^[1].