6-(Aminomethyl)-2-(difluoromethyl)-4-methylpyridine-3-carboxaldehyde
2-(Aminomethyl)-6-(difluoromethyl)-3-methylpyridine-5-carboxaldehyde
4-(Difluoromethyl)-2-methyl-6-nitropyridine-3-carboxaldehyde
2-(Aminomethyl)-5-(difluoromethyl)-6-methylpyridine-3-carboxaldehyde