2-(Difluoromethyl)-5-nitro-3-(trifluoromethyl)pyridine-6-acetonitrile
2-(Difluoromethyl)-4-nitro-3-(trifluoromethyl)pyridine-6-acetonitrile
Methyl 5-(difluoromethyl)-2-methyl-3-(trifluoromethyl)pyridine-6-acetate
Methyl 3-(difluoromethyl)-5-methyl-4-(trifluoromethyl)pyridine-2-acetate