2-Iodo-6-nitro-4-(trifluoromethoxy)pyridine-3-acetic acid
2-Iodo-5-nitro-6-(trifluoromethoxy)pyridine-3-acetic acid
2-(Difluoromethyl)-5-hydroxy-3-(trifluoromethoxy)pyridine-6-carboxylic acid
5-(Difluoromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-2-methanol