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