3 resultados para Narcotic Analgesics
em Chinese Academy of Sciences Institutional Repositories Grid Portal
Resumo:
A new approach for fast and sensitive electrochemiluminescence (ECL) detection of narcotic drugs on a microchip after separation by micellar electrokinetic chromatography (MEKC) is presented, taking the cocaine and its hydrolysate ecgonine as the test analytes. The mixture of hydrophilic BMIMBF4 ionic liquid (IL) and sodium dodecyl sulfate (SDS) was used directly as the buffer of MEKC with less noisy baselines, lower electrophoretic current and satisfactory separation performance.
Resumo:
Using electrospray ionization (ESI) and tandem mass spectrometry techniques, the protonic positions in protonated molecular ions of some narcotic drugs were studied, The data of ESI/MSn experiments of morphine and deuterium-loaded morphine were first discussed. The protonic position was considered to locate on oxygen atom of cyclic ether in morphine molecular, Compared with the same and different: ions among morphine, codeine, acetylcodeine and dihydrocodeine, the protonic positions in protonated molecular ions of these compounds were further determined. The fragmentation mechanism of morphine in ESI/MSn: experiments was also repored in the paper, and there were similar dehydrolysis mechanism in gas phase or in liquid phase for morphine.
Resumo:
Traditional Chinese Medicine (TCM) based on natural products is one important part of the Chinese civilization.Owing to the complexity of the composition,the study on medical effective components and curative effects are very difficult;Fuzi (Radix Aconiti Lateralis Praeparata) has been widely used for cardiotonic and analgesics in China,however,the component-aconitine in which is very toxic and may cause some side-effect.This paper reported the application of electrospray iohization mass spectrometric(ESIMS) technique on study of the compound prescriptions containing fuzi,Renshensini concoction and Baweidihuang concoction,to explore the mechanism of synergy between fuzi and other herbs.From chemical point of view,the detoxification mechanism can be attributed to the hydrolysis of the solubility of toxic diester-alkaloids from concoctions of fuzi.Radix Glycyrrhizae Praeparata,Rhizoma Zingiberis,Radix Ginsengp promote the hydrolysis to produce the less toxic monoester-alkaloids and Fructus Corni reduce the solubility of hypaconitine from fuzi.