用葡聚糖凝胶SephadexLH-20分离下列黄酮,甲醇为洗脱剂,最先被洗脱的是()  

A . ['[false,'https://assets.asklib.com/psource/2016090709285570522.gif B .https://assets.asklib.com/psource/2016090709290093232.gif C .https://assets.asklib.com/psource/2016090709292079632.gif D .https://assets.asklib.com/psource/2016090709292518528.gif E .https://assets.asklib.com/psource/2016090709293181601.gif

时间:2022-08-31 00:28:18 所属题库:天然药物化学基本知识题库

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