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.
本发明涉及一类新型的具有苯并噻吩或噻吩骨架的异羟肟酸衍生物。
The present invention relates to a novel class of hydroxamic acid derivatives having a benzothiophene or thiophene backbone.
本发明涉及新颖的通式（I）的苯丙素类衍生物，其中R表示氢。
The invention relates to a phenyl propanoid derivative of formula (I), wherein R represents hydrogen.
新型含1，2，4-三唑及苯并三唑类杂环衍生物的合成。
The Synthesis of Heterocyclic Derivatives Containing 1,2,4-triazole or Benzotriazole;
结论：化合物1是一个新的二苯甲烷类衍生物，化合物2 - 6皆为紫玉盘属植物中首次分到。
CONCLUSION: compound 1 was a new diphenylmethane derivative, and compounds 2-6 were isolated from the genus Uvaria for the first time.
新型紫外光吸收剂的主要成分包括：水杨酸苯酯类及其衍生物、三嗪类或邻羟基苯丙三唑类化合物。
The novel ultraviolet absorber mainly comprises the ingredients of: phenyl salicylates and derivatives thereof, and triazine or ortho-hydroxyazimidobenzene compounds.
新型紫外光吸收剂的主要成分包括：水杨酸苯酯类及其衍生物、三嗪类或邻羟基苯丙三唑类化合物。
The novel ultraviolet absorber mainly comprises the ingredients of: phenyl salicylates and derivatives thereof, and triazine or ortho-hydroxyazimidobenzene compounds.
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