4-(Difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine-3-carboxylic acid
2-(Difluoromethyl)-5-methoxy-4-(trifluoromethoxy)pyridine-3-acetonitrile
2-(Difluoromethyl)-4-methoxy-3-(trifluoromethoxy)pyridine-5-carboxylic acid
6-(Difluoromethyl)-4-methoxy-2-(trifluoromethoxy)pyridine-3-acetonitrile