Ethyl 3-(aminomethyl)-2-(difluoromethyl)-6-methylpyridine-4-carboxylate
Ethyl 3-(aminomethyl)-2-(difluoromethyl)-5-methylpyridine-4-carboxylate
Ethyl 3-(aminomethyl)-2-(difluoromethyl)-4-methylpyridine-5-carboxylate
Ethyl 6-(aminomethyl)-2-(difluoromethyl)-4-methylpyridine-3-carboxylate