Methyl 3-(aminomethyl)-2-(difluoromethyl)-5-methylpyridine-4-carboxylate
5-(Difluoromethyl)-3-methyl-2-nitropyridine-4-sulfonyl chloride
Methyl 2-(aminomethyl)-6-(difluoromethyl)-5-methylpyridine-3-carboxylate
5-(Difluoromethyl)-3-methyl-4-nitropyridine-2-sulfonyl chloride