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