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