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