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