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