Abstract The thermal properties of nine biologically important fused azaisocytosine-containing congeners, e.g. 3-(thiophen-2-yl)-8-(R-phenyl)-7,8-dihydroimidazo[2,1-c][1,2,4]triazin-4(6H)-ones (1-9), were studied by means of different thermal analysis methods (TG-DTG-DSC and TG-FTIR). The influence of heating atmosphere (air and nitrogen) on the pathways of thermal decomposition was investigated. The thermal stability of the investigated compounds in air can be ordered (in relation to the substituent attached at the phenyl moiety and denoted as R) as follows: 2-CH3O

中文翻译：

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生物学上重要的含氮杂异胞嘧啶同系物的热研究和一个代表的晶体结构

摘要 九种生物学上重要的含氮杂异胞嘧啶同系物的热性质，例如 3-(噻吩-2-基)-8-(R-苯基)-7,8-二氢咪唑并[2,1-c][1,2, 4]triazin-4(6H)-ones (1-9)，通过不同的热分析方法（TG-DTG-DSC 和 TG-FTIR）进行了研究。研究了加热气氛（空气和氮气）对热分解途径的影响。所研究化合物在空气中的热稳定性可以排序（与连接在苯基部分并表示为 R 的取代基有关）如下： 2-CH3O