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