Ethyl 3-(aminomethyl)-2-(difluoromethyl)-4-methoxypyridine-5-carboxylate
Ethyl 6-(aminomethyl)-2-(difluoromethyl)-3-methoxypyridine-4-carboxylate
Methyl 2-(aminomethyl)-4-(difluoromethyl)-3-methoxypyridine-6-carboxylate
Methyl 2-(aminomethyl)-4-(difluoromethyl)-3-methoxypyridine-5-carboxylate