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