3-methoxyestra-1(10),2,4,8,14-pentaen-17-one (en)Estra-1,3,5(10),8,14-pentaen-17-one, 3-methoxy-, (+-)- (en)

3-ethyl-2-methylcyclopentan-1-one

6-(diethylamino)-5,7-dimethylbicyclo[3.2.0]hept-6-en-4-one

3-(4-chlorobut-1-en-2-yl)-2-methylcyclopentan-1-one

2-甲基-3-[(三甲基硅烷基)乙炔基]环戊酮