5-Amino-2-(chloromethyl)-3-(difluoromethyl)pyridine-4-carboxaldehyde
5-Amino-3-(chloromethyl)-2-(difluoromethyl)pyridine-4-carboxaldehyde
3-Amino-5-(chloromethyl)-4-(difluoromethyl)pyridine-2-carboxaldehyde
4-Amino-5-(chloromethyl)-3-(difluoromethyl)pyridine-2-carboxaldehyde