(Z)-5-(4-(2-(5-Ethylpyridin-2-yl)ethoxy)benzylidene)thiazolidine-2,4-dione

It acts as the direct precursor to the active pharmaceutical ingredient by providing the necessary thiazolidinedione scaffold linked to the pyridine moiety. The compound (Z)-5-(4-(2-(5-Ethylpyridin-2-yl)ethoxy)benzylidene)thiazolidine-2,4-dione is a critical late-stage intermediate in the synthesis of Pioglitazone (Actos).