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