257478

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关键词:'257478'

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Simultaneous detection of stable isotope-labeled and unlabeled L-tryptophan and of its main metabolites, L-kynurenine, serotonin and quinolinic acid, by gas chromatography/negative ion chemical ionization mass spectrometry.

Mitsue Sano et al.

Journal of mass spectrometry : JMS, 49(2), 128-135 (2014-03-29)

A method for the detection of unlabeled and (15)N2 -labeled L-tryptophan (L-Trp), L-kynurenine (L-Kyn), serotonin (5-HT) and quinolinic acid (QA) in human and rat plasma by GC/MS is described. Labeled and unlabeled versions of these four products were analyzed as

[Teratogenicity study of 2,2,3,3,3-pentafluoro-1-propanol (5FP) in rats by oral administration].

M Usami et al.

Kokuritsu Iyakuhin Shokuhin Eisei Kenkyujo hokoku = Bulletin of National Institute of Health Sciences, (118)(118), 45-49 (2001-09-06)

Teratogenicity of 2,2,3,3,3-pentafluoro-1-propanol (5FP), an alternative cleaning agent for chlorofluorocarbon, was examined in rats. 5FP was diluted with sesame oil and given to pregnant rats (Crj: Wistar) by gavage once a day from day 7 to 17 of pregnancy at

Development and validation of a GC-MS method for the determination of hydroxyzine and its active metabolite, cetirizine, in whole blood.

Maria Katselou et al.

Journal of pharmaceutical and biomedical analysis, 145, 765-772 (2017-08-19)

A simple, rapid, sensitive and accurate gas chromatography-mass spectrometric method was developed and validated for the simultaneous determination of hydroxyzine and cetirizine in whole blood. Solid-phase extraction procedure using Bond Elut LRC Certify II columns was used for the isolation

Anionic derivatives of uracil: fragmentation and reactivity.

Callie A Cole et al.

Physical chemistry chemical physics : PCCP, 16(33), 17835-17844 (2014-07-19)

Uracil is an essential biomolecule for terrestrial life, yet its prebiotic formation mechanisms have proven elusive for decades. Meteorites have been shown to contain uracil and the interstellar abundance of aromatic species and nitrogen-containing molecules is well established, providing support

Ishihara, T.; et al.

Tetrahedron, 62, 3783-3783 (2006)

Urine Mescaline Screening With a Biochip Array Immunoassay and Quantification by Gas Chromatography-Mass Spectrometry.

Dilek Battal et al.

Therapeutic drug monitoring, 37(6), 805-811 (2015-05-21)

Mescaline, the primary psychoactive chemical in peyote cactus, has been consumed for thousands of years in ancient religious ceremonies. The US military wanted to determine if mescaline intake was a problem for personnel readiness. Twenty thousand seventeen urine specimens negative

Electrophilic fluorinating reagent mediated synthesis of fluorinated alpha-keto Ethers, benzil, and 6,6'-dialkoxy-2,2'-bipyridines.

Sudha Manandhar et al.

The Journal of organic chemistry, 67(18), 6415-6420 (2002-08-31)

Interactions of various fluorinated and nonfluorinated alcohols with trans-stilbene in the presence of electrophilic reagents were studied. Under neat conditions, reactions of trans-stilbene (1) with fluorinated alcohols, R(f)OH (R(f) = CF3CH2-, CFH2CH2-, CF3CF2CH2-, CF2H(CF2)3CH2-, (CF3)2CH-, (CF3)3C- (2a-f) in the presence

Simultaneous analyses of cocaine, cocaethylene, and their possible metabolic and pyrolytic products.

Patrick S Cardona et al.

Forensic science international, 157(1), 46-56 (2006-01-24)

A method was developed for simultaneously analyzing cocaine (COC), benzoylecgonine (BZE), norbenzoylecgonine (BNE), norcocaine (NCOC), ecgonine (ECG), ecgonine methyl ester (EME), m-hydroxybenzoylecgonine (HBZE), anhydroecgonine methyl ester (AEME), cocaethylene (CE), norcocaethylene (NCE), and ecgonine ethyl ester (EEE) in blood, urine, and

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