... the chemical formula for water 水的化学式 a molecular formula 分子式 a structural formula 构造式,结构式 ...
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The purified compound showed a molecular formula of C28H44O3, displaying characteristic features of epidioxy sterols and was reverted to ergosterol when submitted to S. schenckii enzymatic extract.
纯化化合物展示了分子式C28H44O3，显示过氧甾醇的特征和复归麦角提交给美国时，申克酶提取。
Before we can assign a structural formula to a compound, we must first know its molecular formula.
在确定一个化合物的结构式之前，首先应知道它的分子式。
The calculation of molecular formula of compounds was described by13C NMR (com, DEPT) data in this paper. It is a useful method for unknown compounds.
介绍了用13c NMR (COM, DEPT)数据计算化合物的分子式，该方法有利于未知化合物的分子式计算。
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