4-(Difluoromethyl)-5-methyl-3-nitropyridine-2-sulfonyl chloride
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