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