CAY10404 is a potent and selective cyclooxygenase-2 (COX-2) inhibitor with an IC50 of 1 nM and a selectivity index (SI; COX-1 IC50/COX-2 IC50) of >500000. CAY10404 is a potent PKB/Akt and MAPK signaling pathways inhibitor and induces apoptosis in non-small cell lung cancer (NSCLC) cells. CAY10404, a diarylisoxazole, has good analgesic, anti-inflammatory, and anti-cancer activities.