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