Pioglitazone metabolite MIV is a thiazolidinedione derivative, featuring a thiazole ring and a hydroxylated pyridine moiety. Its structure is characterized by the presence of a chiral center and a sulfonamide functional group. As a primary metabolite of Pioglitazone, it retains the core thiazolidinedione scaffold. This compound serves as a critical HPLC reference standard.
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