3-(Difluoromethyl)-6-hydroxy-2-(trifluoromethoxy)pyridine-5-acetic acid
3-(Difluoromethyl)-5-hydroxy-4-(trifluoromethoxy)pyridine-2-carboxylic acid
3-(Aminomethyl)-4-iodo-6-(trifluoromethoxy)pyridine-2-carboxylic acid
3-(Aminomethyl)-4-iodo-2-(trifluoromethoxy)pyridine-6-carboxylic acid