发现旋光基质有外消旋作用。
Racemization is found with optically active substrate substrates.
发现旋光基质有外消旋作用。
分子量降低和消旋作用对温度的依赖性，是由于分子运动和笼罩效应以及重合的空间位阻效应所致。
The dependence of chain scission and racemization on temperature results from molecular motion, "cage effect" and steric hindrance during recombination.
在许多情况下，外消旋药物中的单一对映体分别具有不同的疗效，有的甚至有相反的作用。
In many cases, racemic drug's single antipode has different curative effect, sometimes it even has adverse action.
当手性药物以外消旋体供药用时，其对映体间就可能发生药效学和药代动力学的相互作用。
Pharmacological interactions between the enantiomers may happen when a chiral drug was used as its racemate.
目的：探讨消旋去甲乌药碱治疗病态窦房结综合征的作用机制。
Objective: To investigate the mechanism of higenamine in treatment of sick sinus syndrome.
目的：探讨消旋去甲乌药碱治疗病态窦房结综合征的作用机制。
Objective: To investigate the mechanism of higenamine in treatment of sick sinus syndrome.
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