Ethyl 5-(aminomethyl)-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-6-carboxylate
Ethyl 5-(aminomethyl)-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-4-carboxylate
Ethyl 4-(aminomethyl)-5-(difluoromethyl)-2-(trifluoromethyl)pyridine-3-carboxylate
Ethyl 4-(aminomethyl)-3-(difluoromethyl)-6-(trifluoromethyl)pyridine-2-carboxylate