Labelled 2,5-Dimethyl Celecoxib (D470890). A non-cyclooxygenase-2 inhibitor analog of Celecoxib (C251000). The celecoxib analog, 2,5-di-Me celecoxib (DMC), lacks COX-2 inhibitory activity but exhibits cytotoxic properties comparable to the COX-2 inhibitor Celecoxib.