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