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