For the apolar compounds, the derivatization was not necessary.

对于非极性化合物，不一定要进行这样的衍生化。

A method was developed for pre-column derivatization and gas chromatographic analysis of validamycin A residue in soil.

建立了土壤中井冈霉素A残留的柱前衍生化气相色谱分析方法。

General approaches involve the nucleophilic cycloalkylation, carbenoids addition of certain amino acid derivatives and derivatization from simple cyclopropane compounds.

制备方法包括对简单氨基酸衍生物的亲核环烷基化、类卡宾加成以及简单环丙烷化合物的衍生化合成等。