Methyl 3-(difluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine-4-acetate
Methyl 5-(difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine-3-acetate
Methyl 4-(difluoromethyl)-5-nitro-2-(trifluoromethoxy)pyridine-3-acetate
5-(Aminomethyl)-2-methyl-3-(trifluoromethoxy)pyridine-6-acetonitrile