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