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