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