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