化合物 https://assets.asklib.com/psource/201603201533203147.jpg 的对映体是()。 https://assets.asklib.com/psource/2016032015332869626.jpg
下列化合物极性由大到小的顺序为()>()>()>()。 https://assets.asklib.com/psource/2016090714161498738.gif https://assets.asklib.com/psource/2016090714162165849.gif
该化合物 https://assets.asklib.com/psource/2016090709462531864.gif 属于()
比较下列化合物用SephadexLH-20分离的R值: (1)()>()>()>()>()>() https://assets.asklib.com/psource/2016090714401872413.jpg https://assets.asklib.com/psource/2016090714402598398.jpg (2)()>()>() https://assets.asklib.com/psource/2016090714405822062.jpg
比较下列化合物的荧光强弱。 A. https://assets.asklib.com/psource/2016090714264954074.gif B. https://assets.asklib.com/psource/2016090714265481998.gif C. https://assets.asklib.com/psource/2016090714270269316.gif
硅胶薄层层析,以苯-丙酮(4:1展开),比较下面3个化合物的比移值大小。 A. https://assets.asklib.com/psource/2016090714230199432.gif B. https://assets.asklib.com/psource/2016090714231588408.gif C. https://assets.asklib.com/psource/2016090714232118522.gif
纽曼投影式 https://assets.asklib.com/psource/2016032015532093565.jpg 与下列哪一个化合物相同?() https://assets.asklib.com/psource/2016032015532746060.jpg
下列化合物不能与 https://assets.asklib.com/psource/2016032015180822263.jpg 发生反应的是()。 https://assets.asklib.com/psource/2016032015181816392.jpg