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