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