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benzoylecgonine/hymenoxys rusbyi

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ArtykułyBadania klinicznePatenty
Strona 1 od 18 wyniki

GC/MS quantitation of benzoylecgonine following liquid-liquid extraction of urine.

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An analytical procedure for the determination of benzoylecgonine in urine by GC/MS using a two step liquid-liquid extraction scheme has been developed. Benzoylecgonine is one of the principle metabolites of cocaine. The extraction uses a wash step prior to extraction and derivatization and requires
This study reports the development and validation of a method using hydrophilic interaction liquid chromatography-tandem mass spectrometry (HILIC-MS/MS) for the analysis of cocaine and its metabolites benzoylecgonine (BE), ecgonine methyl ester (EME), and cocaethylene (CE) in hair samples.
In the later stages after intake, the important markers of cocaine abuse are its main metabolites in urine, benzoylecgonine and ecgonine methyl ester. The efficiency of the extraction of amphoteric benzoylecgonine together with cocaine from aqueous media by means of various solvents at various pH
A rapid and cleanup-free microwave-assisted extraction (MAE) method is proposed for the simultaneous extraction of six illegal drugs of abuse - cocaine, benzoylecgonine (BZE), cocaethylene (CCE), morphine, 6-monoacethylmorphine (6AM) and codeine - from human hair samples. The analytes were
We have developed a new solid-phase extraction (SPE) on C18 cartridges which allows a very simple protocol of manipulation and a single elution of opiates and cocainics from human hair samples. The method involved decontamination in a phosphate buffer and dichloromethane, pulverization in a ball

Simultaneous determination of opiates, cocaine and major metabolites of cocaine in human hair by gas chromotography/mass spectrometry (GC/MS).

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A procedure is presented for the simultaneous identification and quantification of morphine (MOR), codeine (COD), ethylmorphine (EM), 6-monoacetylmorphine (6-MAM), cocaine (COC), benzoylecgonine (BZE), ecgonine methylester (EME) and cocaethylene (CE), contained in the hair of opiates and cocaine

A rapid analytical method based on microwave-assisted extraction for the determination of drugs of abuse in vitreous humor.

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Robust and simple validated analytical methods are required in postmortem toxicology to confirm immunoassay screening analysis of drugs of abuse. In this work, microwave-assisted extraction (MAE) was evaluated as an alternative method for extraction of target compounds such as cocaine,

Simultaneous determination of traditional and emerging illicit drugs in sediments, sludges and particulate matter.

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An analytical method for determining traditional and emerging drugs of abuse in particulate matter, sewage sludge and sediment has been developed and validated. A total of 41 drugs of abuse and metabolites including cocainics, tryptamines, amphetamines, arylcyclohexylamines, cathinones, morphine

Immunological screening of drugs of abuse and gas chromatographic-mass spectrometric confirmation of opiates and cocaine in hair.

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The work presents an analytical strategy to detect drugs of abuse in hair. It involves two sequential steps: a screening by a simple enzyme-linked immunosorbent assay (ELISA) methodology to detect opiates, cocaine and its metabolites, and benzodiacepines, followed by confirmation of opiates and
A selective molecularly imprinted polymer synthesized for the selective retention of cocaine (COC) and its metabolites [benzoylecgonine (BZE), ecgonine methyl ester (EME), and cocaethylene (CE)] was used as a solid adsorbent for assessing cocaine abuse by plasma analysis. The MIP beads (50mg) were

Chromatographic determination of drugs of abuse in vitreous humor using solid-phase extraction.

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A simple method is presented for the simultaneous determination of morphine, 6-acetylmorphine, codeine, cocaine, benzoylecgonine, cocaethylene, methadone and 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine (EDDP) in vitreous humor by high-performance liquid chromatography with photodiode array
A magnetic molecularly imprinted polymer (MMIP) has been synthesized and applied for cocaine (COC) and metabolites (benzoylecgonine, BZE; cocaethylene, CE; and ecgonine methyl ester, EME) recognition/pre-concentration in urine samples. The MMIP has been prepared using COC as a template molecule,

Simultaneous quantification of opiates, cocaine and cannabinoids in hair.

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The present paper describes a sensitive method developed in our laboratory for the simultaneous analysis of opiates (morphine, codeine and monoacetylmorphine), cocainis (cocaine and benzoylecgonine) and cannabinoids (delta 9-tetrahydrocannabinol and 11-nor-delta 9-tetrahydrocannabinol-9-carboxylic

Versatile, efficient system for extracting drugs from urine for gas chromatographic/mass spectrometric analysis.

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This is a method for efficiently extracting a wide variety of drugs from urine for toxicological analysis by gas chromatography/mass spectrometry. Before extraction, the urine sample is acetylated, diluted with an equal volume of water, and saturated with NaCl. This solution is then mixed with an

Development and validation of a gas chromatography-mass spectrometry method for opiates and cocaine in human bone.

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A method based on gas chromatography-mass spectrometry (GC-MS) is described for the determination of opioids (6-monoacetylmorphine, morphine, methadone and tramadol) and cocaine and its major metabolite in human bone. After the addition of nalorphine as internal standard, pulverized samples were
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