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