What kind of method is employed for the assay of scopolamine hydrobromide tablets?氢溴酸东莨菪碱片含量测定的方法与原理是什么？
And in the lappaconitine hydrobromide preparation, the outgrowth and long reaction time were overcome by dibromine alkyl instead of hydrobromic acid.同时在氢溴酸盐制备上，用二溴代烷烃代替氢溴酸克服了反应副产物和反应时间长等问题。
