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