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