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