Ethyl 3-methyl-6-nitro-2-(trifluoromethoxy)pyridine-4-carboxylate
Ethyl 3-(aminomethyl)-5-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-acetate
Ethyl 5-methyl-2-nitro-4-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 5-(aminomethyl)-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-acetate