化学结构式的拓扑描述，是化学信息计算机化的手段之一。
The topological description of structure formulas of molecules is an important means of the computerization of the chemical information.
文章列出了这两类荧光增白剂主要品种的化学结构式、简述了它们的合成工艺路线及性能。
The paper has also listed the chemistry structural formula of the two kinds of bis(triazinyl)aminostibene and summarized their synthes…
由于种种原因，在化学数据库所收集的文摘里，每种化合物名称并不一定附有它的化学结构式。
Due to some reasons each compound name is not always accompanied by its chemical structure formula in the abstracts collected by chemistry database.
一个化合物分子可由一种以上不同形式的化学结构式来表示的现象，称之为化学结构表示的歧义性。
The phenomenon that one compound can be represented by more than one structural diagrams is called ambiguity of chemical structure.
外消旋体、（R）-异构体和（S）-异构体具有相同的化学结构式，具有不同的立体结构和旋光性能。
The raceme, the (R)-isomer and the (S)-isomer are identical in chemical structural formula but different in stereostructure and optical rotation performance.
本发明公开了一种抗流感病毒前体药，是有关1，3-吡嗪并恶 嗪-2，4二酮的衍生物，其化学结构式为；
The invention discloses an anti-influenza virus prodrug which is a derivative related to 1, 3-pyrazine oxazine-2, 4 diketone with a chemical structural formula (I);
本发明公开了化学结构式I所示的5-（4-氯苯甲基）-4-叔丁基-2-氨基噻唑硝酸盐手性晶体及其制备方法。
The invention discloses a 5-(4-chlorophenylmethyl)-4-tertiary butyl-2-aminothiazole nitrate chiral crystal shown in a chemical formula I and a preparation method thereof.
在分析废水中油粒的表面化学性质及浮选剂除油效率基础上，设计出高效浮选剂分子的结构式。
Then It has design molecule structure of floatation agent by analysing the chemical properties of suspending substances in wastewater and the efficiency of removing oil in wastewater.
量子化学计算棉酚与胸腺嘧啶分子中的净电荷分布，发现沿两者结构式粗线上各原子的电荷恰好符号相反（图2）。
Quantum chemical calculations of gossypol and thymine reveal that the net electronic charge distributions along the boldfaced line of their structural formula (Fig. 2) are just opposite in sign.
量子化学计算棉酚与胸腺嘧啶分子中的净电荷分布，发现沿两者结构式粗线上各原子的电荷恰好符号相反（图2）。
Quantum chemical calculations of gossypol and thymine reveal that the net electronic charge distributions along the boldfaced line of their structural formula (Fig. 2) are just opposite in sign.
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