Also available in 1 mL, 2 mg, 5 mg, 10 mg, 50 mg, 100 mg, 200 mg and bulk. Please contact Fisher for quotes. FK 3311 (COX-2 Inhibitor V) is an orally available, cell-permeable sulfonanilide that functions as a COX-2 inhibitor and non-steroidal anti-inflammatory drug (NSAID). Purity 97.3%