Pioglitazone Impurities,Pioglitazone-EP Impurity C,B

• Pioglitazone-EP Impurity C
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• Impurity: Pioglitazone-EP Impurity C
• Chemical Name: 5-(4-(2-(5-ethylpyridin-2-yl)ethoxy)benzyl)-3-(2-(5-ethylpyridin-2-yl)ethyl)thiazolidine-2,4-dione

• Pioglitazone-EP Impurity B
• 
• Impurity: Pioglitazone-EP Impurity B
• Chemical Name: 5-{4-[2-(5-Ethyl-2-pyridinyl) ethoxy]benzylidene}-2,4-thiazolidinedione

• Pioglitazone-Pioglitazone Imino Impurity
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• Impurity: Pioglitazone-Pioglitazone Imino Impurity
• Chemical Name: 5-(4-(2-(5-ethylpyridin-2-yl)ethoxy)benzyl)-4-iminothiazolidin-2-one

• Pioglitazone-Pioglitazone Impurity
• 
• Impurity: Pioglitazone-Pioglitazone Impurity
• Chemical Name: 5-{4-[2-(5-Ethyl-2-pyridyl)ethoxy]benzyl}-4-[4-[2-(5-ethyl-2-pyridyl)ethoxy]phenoxy]-2,5-