Iguratimod (Standard) is the analytical standard of Iguratimod. This product is intended for research and analytical applications. Iguratimod is an antirheumatic agent, acts as an inhibitor of COX-2, with an IC50 of 20 µM (7.7 µg/mL), but shows no effect on COX-1. Iguratimod also inhibits macrophage migration inhibitory factor (MIF) with an IC50 of 6.81 µM.