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