3-(Difluoromethyl)-6-methyl-2-nitropyridine-5-sulfonyl chloride
5-(Difluoromethyl)-2-methyl-4-nitropyridine-3-sulfonyl chloride
2-(Aminomethyl)-4-(difluoromethyl)-3-methylpyridine-6-acetonitrile
2-(Aminomethyl)-3-(difluoromethyl)-6-methylpyridine-5-acetonitrile