英文别名Hydroxy Pioglitazone (M-II); Pioglitazone, hydroxyl M-II; 2,4-Thiazolidinedione, 5-[[4-[2-(5-ethyl-2-pyridinyl)-2-hydroxyethoxy]phenyl]methyl]-; Pioglitazone Hydroxy M-II; Pioglitazone M2 Metabolite; Pioglitazone Impurity 16; 5-[[4-[2-(5-ethylpyridin-2-yl)-2-hydroxyethoxy]phenyl]methyl]-1,3-thiazolidine-2,4-dione 
