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Puslapis 1 nuo 37 rezultatus
Multidimensional analysis of cannabis volatile constituents: identification of 5,5-dimethyl-1-vinylbicyclo[2.1.1]hexane as a volatile marker of hashish, the resin of Cannabis sativa L.
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The volatile constituents of drug samples derived from Cannabis sativa L. were investigated by means of headspace solid phase microextraction (HS-SPME) and gas chromatography techniques (GC-MS, GC×GC-MS). Samples of cannabis herb and hashish showed clear differences in their volatile chemical
Testing human hair for cannabis. II. Identification of THC-COOH by GC-MS-NCI as a unique proof.
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To validate information on cannabis use, 11-nor-delta 9-tetrahydrocannabinol-9-carboxylic (THC-COOH) was investigated in human hair. The identification of THC-COOH in hair would document cannabis use more effectively than the detection of the parent drug which might have come from environmental
Cannabinoids in humans. I. Analysis of delta 9-tetrahydrocannabinol and six metabolites in plasma and urine using GC-MS.
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This report describes a method for the quantitative analysis of delta 9-tetrahydrocannabinol and six of its metabolites, 8 alpha-hydroxy-delta 9-tetrahydrocannabinol, 8 beta-hydroxy-delta 9-tetrahydrocannabinol, 11-hydroxy-delta 9-tetrahydrocannabinol, 8 alpha,11-dihydroxy-delta
Therapeutic Use of Δ9-THC and Cannabidiol: Evaluation of a New Extraction Procedure for the Preparation of Cannabis-based Olive Oil.
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BACKGROUND
Since 2013 Cannabis-based preparations, containing the two main cannabinoids of interest, Δ9-tetrahydrocannabinol (THC), and cannabidiol (CBD), can be used for therapeutic purposes, such as palliative care, neurodegenerative disorder treatment and other therapies. The preparations may
Simultaneous quantification of cannabinoids and metabolites in oral fluid by two-dimensional gas chromatography mass spectrometry.
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Development and validation of a method for simultaneous identification and quantification of Delta9-tetrahydrocannabinol (THC), cannabidiol (CBD), cannabinol (CBN), and metabolites 11-hydroxy-THC (11-OH-THC) and 11-nor-9-carboxy-THC (THCCOOH) in oral fluid. Simultaneous analysis was problematic due
Death Associated With the Use of the Synthetic Cannabinoid ADB-FUBINACA.
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Synthetic cannabinoids have been found in herbal incense products for the last several years. We report the rapid death of an individual that was certified as synthetic cannabinoid-associated. The autopsy blood specimen was extracted by a liquid-liquid extraction at pH 10.2 into a hexane-ethyl
Detection of Δ9-tetrahydrocannabinol in exhaled breath collected from cannabis users.
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Exhaled breath has recently been proposed as a new possible matrix for drugs of abuse testing. A key drug is cannabis, and the present study was aimed at investigating the possibility of detecting tetrahydrocannabinol and tetrahydrocannabinol carboxylic acid in exhaled breath after cannabis smoking.
A comparative analysis of Cannabis material.
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Extracts of 100 plant-like or resinous materials were analyzed for CBD, CBC, delta 9-THC, and CBN by GC using two different column packings and by GC-MS. Our independent identification of these cannabinoids confirmed those of other forensic science analysts who used microscopic examination, the
Testing human hair for cannabis.
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To validate information on cannabis use, we investigated human hair and pubic hair for cannabinoids (THC and THC-COOH) by gas chromatography/mass spectrometry. Samples (100 mg approximately) were decontaminated with methylene chloride, then pulverized and dissolved in 1 ml 1 N NaOH for 10 min at 95
Cannabinoids determination in bronchoalveolar lavages of cannabis smokers with lung disease.
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Background Cannabis smoke affects the lungs similarly to tobacco smoke, causing symptoms such as increased cough, sputum, hyperinflation and chronic bronchitis. Chronic use can also cause serious lung diseases and airway obstruction. We developed and validated a method for the identification and
[Neurologic complications of drug addiction. General aspects. Complications caused by cannabis, designer drugs and volatile substances].
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When a patient presents a neurological disorder, it is important to consider drugs is a possible cause. The risk to suffer neurological complications by drugs is unknown. It is difficult to calculate the number of drug addicts or the number of occasional drug users. It is important take into account
Cannabinoids in humans. II. The influence of three methods of hydrolysis on the concentration of THC and two metabolites in urine.
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Glucuronide conjugates of cannabinoids were previously identified in humans. For gas chromatographic-mass spectrometric (GC-MS) analysis of the unconjugated compounds in human urine, it is necessary to cleave the glucuronide moiety. Base hydrolysis and two forms of enzymatic hydrolysis were compared
Hair testing for cannabis in Spain and France: is there a difference in consumption?
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This paper compares the methods used in Sevilla, Spain with those used in Strasbourg, France for analyzing cannabinoids (delta 9-tetrahydrocannabinol [THC] and 11-nor-delta 9-tetrahydrocannabinol-9-carboxylic acid [THCCOOH]) in human hair. The Sevilla procedure involved the following steps: After
Chromophoric labeling of cannabinoids with 4-dimethylaminoazobenzene-4'-sulfonyl chloride.
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A simple and sensitive assay for the cannabinoids is presented using a dabsylation procedure. Dabsyl derivatives of delta 9-tetrahydrocannabinol (delta 9-THC) and cannabinol (CBN) were prepared by reacting with 4-dimethylaminoazobenzene-4'-sulfonyl chloride (dabsyl chloride) in acetone in the
Segmental hair analysis for 11-nor-Δ⁹-tetrahydrocannabinol-9-carboxylic acid and the patterns of cannabis use.
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Cannabis is the most widely abused drug in the world. The purpose of this study is to detect 11-nor-9-carboxy-Δ⁹-tetrahydrocannabinol (THCCOOH) in segmental hair and to evaluate the patterns of cannabis use. We investigated the relationship between the concentrations of THCCOOH in hair and the
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