仅含有氮杂原子的杂环化合物。
另一个设在浙江临海，以杂环化学品研发和产品工业化开发为主。
And the other in Linhai, Zhejiang will mainly develop heterocyclic chemicals.
氮、氧杂环化合物是一类非常重要的杂环分子，大多具有生物和药理活性。
Nitrogen- and oxygen-containing heterocyclic compounds are crucial moieties in a wide range of drug leads.
近年来稠杂环的合成及其生物活性的研究日益成为杂环化学研究的热门课题。
In recent years synthetic work on fused heterocyclic compounds and study of theirs biological activities were a hot topic in the field of study on heterocyclic chemistry.
本论文主要研究了稀土氯化物催化的合成氮杂环化合物的反应，得到了新型的七元氮杂环膦酸酯和苯并咪唑衍生物。
The reactions towards synthesis of novel azaheterocyclic phosphonates and benzimidazoles using lanthanide chlorides as catalyst were studied in this thesis:1.
对杂氮锗三环化合物的结构、性质、合成方法及生物活性研究情况作了简要的论述。
This paper is a general review on the structures, properties, synthesis and biological activities of germatranes.
分析结果表明，这些香烟中，含有苯类衍生物、杂环类化合物及多环化合物等，从36种到131种不等，绝大多数有害人体健康。
The results showed that there were 36 to 131 sorts of benzene and its derivatives, heterocyclic compounds, and polycyclic compounds being detected. Most of them have harmful effect on human health.
硅杂六元环化合物在有机硅化学中是一类重要的小分子环系化合物， 广泛应用于有机化学， 金属有机化学以及材料化学等领域。
Six-membered silacycles are a class of important cyclic compounds in organosilicon chemistry, which have many applications in organic, organometallic, and polymer chemistry.
硅杂六元环化合物在有机硅化学中是一类重要的小分子环系化合物， 广泛应用于有机化学， 金属有机化学以及材料化学等领域。
Six-membered silacycles are a class of important cyclic compounds in organosilicon chemistry, which have many applications in organic, organometallic, and polymer chemistry.
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