Screening for 2 - bromo-butyric acid as the starting material, after ammonolysis, esterification, ester amine solution, split, five-step cyclization reaction Levetiracetam.
筛选以2 -溴代丁酸为起始原料，经氨解，酯化，酯胺解，拆分，环合五步反应制得左乙拉西坦。
2
Compared with sorbic acid, the microorganism growth lag phase was shortened, biomass and colony forming unit were decrease under the action of bromo-sorbic acid.
溴代山梨酸与山梨酸相比，被作用的微生物生长适应期明显延长，生长量明显减小，霉菌菌落形成数减少。
3
First, the synthesis method and anti-microbial activity of bromo-sorbic acid were studied.