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