Methyl 3-amino-4-(chloromethyl)-2-(difluoromethyl)pyridine-5-carboxylate
2-Amino-6-(chloromethyl)-5-(difluoromethyl)pyridine-3-carboxaldehyde
Methyl 3-amino-2-(chloromethyl)-5-(difluoromethyl)pyridine-6-carboxylate
Methyl 4-amino-2-(aminomethyl)-3-(difluoromethyl)pyridine-6-carboxylate