Ethyl chloroformate reacted with both the hydroxy group and the carboxy group of the 17 position.

 
  • 用氯甲酸乙酯將17位醇羥基和羧羥基同時(shí)?;?
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan