海词手机词典

Twenty-one compounds were obtained from the chloroform and ethyl acetate extraction through repeated silica gel colum chromatograph, preparative TLC, recrystalization and 19 compounds were identified by means of UV IR MS DEPT ~1HNMR ~13CNMR etc.

播放读音 播放读音

以上内容独家创作,受著作权保护,侵权必究

海词词典,十七年品牌