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