1·Vegetables do not form heterocyclic amines or any other carcinogens during cooking.
蔬菜在烹饪过程中不会形成杂环胺或者其它致癌物。
2·Heterocyclic azo dyes are one group of the most important chromogenic reagents in spectrophotometric analysis.
杂环偶氮试剂是一类重要的有机显色剂。
3·We have, therefore, in both of the examples above, heterocyclic compounds with "built-in" or latent functionality.
上述两例中的杂环化合物，都具有“固有的”或潜在的官能基。
4·Heme, a complex heterocyclic compound, is an organic molecule derived from porphyrin with an iron atom at the centre.
血红素(一种复杂的杂环化合物)是来自中心含铁原子的的一种有机分子。
5·Studying the synthesis of heterocyclic compounds and the biologic activity is one of the most spirited items in organic chemistry.
探索杂环化合物的合成及生物活性是有机化学中最具生命力的研究课题之一。