英文别名Pioglitazone Impurity 29; Pioglitazone EP Impurity B; (Z)-5-{4-[2-(5-ETHYLPYRIDIN-2-YL)ETHOXY]BENZYLIDENE}-1,3-THIAZOLIDINE-2,4-DIONE; 2,4-Thiazolidinedione, 5-[[4-[2-(5-ethyl-2-pyridinyl)ethoxy]phenyl]methylene]-, (5Z)-; 5-[[4-[2-(5-ethylpyridin-2-yl)ethoxy]phenyl]methylidene]-1,3-thiazolidine-2,4-dione; 5-{4-[2-(5-ethyl-pyridin-2-yl)-ethoxy]-benzylidene}-thiazolidine-2,4-dione; 5-{4-[2-(5-ethyl-pyridin-2-yl)-ethoxy]-benzylidene}-2,4-thiazolidenedione; 5-<4-<2-(5-ethyl-2-pyridyl)ethoxy>benzylidene>-2,4-thiazolidinedione; 5-[4-[2-(5-ethyl-2-pyridinyl)ethoxy]phenyl]methenyl-2,4-thiazolidinedione; Didehydro Pioglitazone Impurity 
