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