3-(Chloromethyl)-2-(difluoromethyl)-5-fluoropyridine-4-carboxylic acid
3-(Aminomethyl)-2-(difluoromethyl)-4-fluoropyridine-6-carboxylic acid
2-(Aminomethyl)-4-(difluoromethyl)-3-fluoropyridine-5-carboxaldehyde
2-(Aminomethyl)-5-(difluoromethyl)-3-fluoropyridine-6-carboxylic acid