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