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