Mass spectrometric behavior of anabolic androgenic steroids using gas chromatography coupled to atmospheric pressure chemical ionization source. Part I: Ionization
作者:M. Raro、T. Portolés、J. V. Sancho、E. Pitarch、F. Hernández、J. Marcos、R. Ventura、C. Gómez、J. Segura、O. J. Pozo
DOI:10.1002/jms.3367
日期:2014.6
The detection of anabolicandrogenicsteroids (AAS) is one of the most important topics in doping control analysis. Gaschromatographycoupled to (tandem) mass spectrometry (GC–MS(/MS)) with electron ionization and liquid chromatographycoupled to tandem mass spectrometry have been traditionally applied for this purpose. However, both approaches still have important limitations, and, therefore, detection
Gas chromatography/chemical ionization triple quadrupole mass spectrometry analysis of anabolic steroids: ionization and collision-induced dissociation behavior
作者:Michael Polet、Wim Van Gansbeke、Peter Van Eenoo、Koen Deventer
DOI:10.1002/rcm.7472
日期:2016.2.28
detection of new anabolic steroid metabolites and new designer steroids is a challenging task in doping analysis. Switching from electron ionization gaschromatography triple quadrupole massspectrometry (GC/EI‐MS/MS) to chemical ionization (CI) has proven to be an efficient way to increase the sensitivity of GC/MS/MS analyses and facilitate the detection of anabolic steroids. CI also extends the possibilities
新的合成代谢类固醇代谢物和新设计的类固醇的检测在掺杂分析中是一项艰巨的任务。从电子电离气相色谱三重四极杆质谱(GC / EI-MS / MS)切换到化学电离(CI)是提高GC / MS / MS分析灵敏度并促进合成代谢类固醇检测的有效方法。CI还扩展了GC / MS / MS分析的可能性,因为分子离子由于较软的电离而保留为其质子化形式。在EI中,由于分子离子的丰度低或不存在以及广泛的(很大程度上是不可预测的)碎片,很难找到以前未知但预期的代谢物。这项工作的主要目的是研究大量合成代谢雄激素类固醇(AAS)作为其三甲基甲硅烷基衍生物的CI和碰撞诱导解离(CID)行为,以确定结构与CID片段化之间的相关性。需要澄清这些相关性,以阐明未知类固醇和新代谢产物的结构。
Methods and formulations for transdermal or transmucosal application of active agents
申请人:——
公开号:US20040198706A1
公开(公告)日:2004-10-07
Methods, formulations, and kits for providing transdermal or transmucosal delivery of active agents to subjects in need thereof. The formulations and methods treat symptoms of hormonal disorders including hypogonadism, female sexual desire disorder, female menopausal disorder, and adrenal insufficiency.
Formulations for transdermal or transmucosal application
申请人:——
公开号:US20040219197A1
公开(公告)日:2004-11-04
The present invention relates generally to formulations for transdermal or transmucosal administration of an active agent. The invention is a substantially malodorous-free and irritation free transdermal formulation which is substantially free of long chain fatty alcohols, long-chain fatty acids, and long-chain fatty esters.
Permeation enhancer comprising genus Curcuma or germacrone for transdermal and topical administration of active agents
申请人:Carrara Dario Norberto R.
公开号:US20050244522A1
公开(公告)日:2005-11-03
A formulation, method and system for the topical, transdermal or transmucosal administration of a therapeutically effective active agent. Particularly, the invention provides a formulation, system and method for enhancing the permeation or penetration of active agents across the dermal or mucosal surfaces of a mammalian subject. The formulation includes a plant extract of the genus
Curcuma
of the family Zingiberaceae, a germacrone, or a natural or synthetic constituent thereof, which has been found to increase penetration of the active agent across the dermal or mucosal surface. If desired, a secondary permeation enhancer of a polyalcohol, a monoalkyl ether of diethylene glycol, a tetraglycol, or a mixture thereof can be used for certain active agents for optimal permeation enhancement.