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