2-(Difluoromethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine-5-acetonitrile
2-(Difluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine-4-acetonitrile
3-Iodo-6-methyl-2-(trifluoromethoxy)pyridine-4-carboxylic acid
5-Iodo-2-methyl-4-(trifluoromethoxy)pyridine-3-carboxylic acid