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