Showing 1-30 of 52 results for "M35304"
Fernando Barreto-Curiel et al.
PloS one, 12(1), e0170124-e0170124 (2017-01-18)
Fish starvation is defined as food deprivation for a long period of time, such that physiological processes become confined to basal metabolism. Starvation provides insights in physiological processes without interference from unknown factors in digestion and nutrient absorption occurring in...
Ting-Li Han et al.
PloS one, 8(8), e71364-e71364 (2013-08-21)
Phenylethyl alcohol was one of the first quorum sensing molecules (QSMs) identified in C. albicans. This extracellular signalling molecule inhibits the hyphal formation of C. albicans at high cell density. Little is known, however, about the underlying mechanisms by which...
Francesca Casu et al.
Metabolomics : Official journal of the Metabolomic Society, 14(8), 103-103 (2019-03-05)
Saccharomyces cerevisiae has been widely used for fermenting food and beverages for over thousands years. Its metabolism together with the substrate composition play an important role in determining the characteristics of the final fermented products. We previously showed that the...
Pavel A Markin et al.
Metabolomics : Official journal of the Metabolomic Society, 16(7), 74-74 (2020-06-20)
The metabolic alterations reflecting the influence of prostate cancer cells can be captured through metabolomic profiling. To characterize the plasma metabolomic profile in prostatic intraepithelial neoplasia (PIN) and prostate cancer (PCa). Metabolomics analyses were performed in plasma samples from individuals...
Wen-Ping Chen et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 878(24), 2199-2208 (2010-07-29)
To conduct studies of stable isotope incorporation and dilution in growing plants, a rapid microscale method for determination of amino acid profiles from minute amounts of plant samples was developed. The method involves solid-phase ion exchange followed by derivatization and...
Silas G Villas-Bôas et al.
Metabolites, 1(1), 3-20 (2011-01-01)
Gas chromatography-mass spectrometry (GC-MS) is a widely used analytical technique in metabolomics. GC provides the highest resolution of any standard chromatographic separation method, and with modern instrumentation, retention times are very consistent between analyses. Electron impact ionization and fragmentation is...
Ill-Min Chung et al.
Journal of agricultural and food chemistry, 67(2), 711-722 (2018-12-14)
The present study describes compound-specific δ13C and δ15N analyses of fatty acids and amino acids for improving the accurate authentication of organic milk (OM) against conventional milk (CM) collected in Korea. Most δ13Cfatty-acid and δ13Camino-acid values were lower in OM...
4-Alkyl-5(4H)-oxazolones from mixed anhydrides of N-formylamino acids.
N L Benoiton
International journal of peptide and protein research, 38(3), 285-286 (1991-09-01)
Jingjing Zhang et al.
Polymers, 11(6) (2019-06-05)
In order to improve the bioactivity of chitosan, we synthesized a novel series of chitosan derivatives: firstly, chitosan was reacted with methylclhlorofonmate obtaining N-methoxyformylated chitosan (1), which was then converted into N-pyridylurea chitosan derivatives (2a-2c) by amine-ester exchange reaction. In...
Hans F N Kvitvang et al.
Analytical chemistry, 83(7), 2705-2711 (2011-03-11)
Metabolite profiling methods are important tools for measurement of metabolite pools in biological systems. While most metabolite profiling methods report relative intensities or depend on a few internal standards representing all metabolites, the ultimate requirement for a quantitative description of...
Using design of experiments to optimize derivatization with methyl chloroformate for quantitative analysis of the aqueous phase from hydrothermal liquefaction of biomass.
Madsen R B, et al.
Analytical and Bioanalytical Chemistry, 408(8), 2171-2183 (2016)
Andreas Schmidt et al.
Organic & biomolecular chemistry, 6(15), 2804-2814 (2008-07-18)
Densely functionalized azoxabicyclo[3.3.1]nonanones were prepared by regio- and diastereoselective condensation of 1,1-bis(silyloxy)ketene acetals with isoquinolinium and quinolinium salts and subsequent regioselective and stereospecific iodolactonization.
M J Bell et al.
The journal of physical chemistry. A, 111(10), 1762-1770 (2007-02-21)
This study investigates two features of interest in recent work on the photolytic production of the methoxy carbonyl radical and its subsequent unimolecular dissociation channels. Earlier studies used methyl chloroformate as a photolytic precursor for the CH3OCO, methoxy carbonyl (or...
Reaction of Cuprate Reagents with Pyridine in the Presence of Chloroformate. A Novel Synthesis of 1, 4-Dihydropyridine Derivatives.
Piers E and Soucy M
Canadian Journal of Chemistry, 52(20), 3563-3564 (1974)
Regio-and chemoselective addition of alkynyltin reagents to the 2-position of 3-acylpyridines activated by methyl chloroformate: selective synthesis of 2, 3-disubstituted 1, 2-dihydropyridines.
Yamaguchi R, et al.
Tetrahedron Letters, 29(15), 1785-1788 (1988)
Xu Zhang et al.
Analytica chimica acta, 744, 54-59 (2012-09-01)
A simple, rapid microwave digestion procedure for protein hydrolysis preceding the determination of amino acids in yeast using gas chromatography-mass spectrometry (GC-MS) is described. Protein hydrolysis was performed in a focused microwave using 4M methanesulfonic acid (MAS). Amino acids were...
T Herraiz et al.
Journal of chromatography. A, 765(2), 265-277 (1997-03-28)
Various tetrahydro-beta-carboline-3-carboxylic acids (TH beta C-3-COOH) are identified in commercial foods and drinks by GC-MS. Positive identification of 1-methyl-1,2,3,4-tetrahydro-beta-carboline-3-carboxylic acid (MTCA) is demonstrated in soy and tabasco sauces, wine, beer, wine vinegar, cider, orange juice, toasted bread, blue cheese and...
Mohana Krishna Reddy Mudiam et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 925, 63-69 (2013-03-26)
Trichloroethylene (TCE) is a common industrial chemical that has been widely used as metal degreaser and for many industrial purposes. In humans, TCE is metabolized into dichloroacetic acid (DCA), trichloroacetic acid (TCA) and trichloroethanol (TCOH). A simple and rapid method...
Shusheng Luo et al.
Journal of chromatography. A, 1217(43), 6762-6768 (2010-07-10)
A simple and fast sample preparation method for the determination of nonylphenol (NP) and octylphenol (OP) in aqueous samples by simultaneous derivatization and dispersive liquid-liquid microextraction (DLLME) was investigated using gas chromatography-mass spectrometry (GC/MS). In this method, a combined dispersant/derivatization...
Magdalena C Waldhier et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 878(15-16), 1103-1112 (2010-04-08)
GC-MS analysis of fluorinated and non-fluorinated chloroformate and anhydride derivatives of amino acid (AA) enantiomers on two different chiral columns was compared for the direct quantification of free L- and D-AAs in human serum and urine in a single analytical...
Roffi Grandiosa et al.
Fish & shellfish immunology, 104, 633-639 (2020-06-23)
Vibriosis disease is a major constraint for sustainable molluscan aquaculture. Development of strategies to enhance disease resistance during grow out would greatly reduce stock mortality and boost production yields. In this study, New Zealand black-footed abalone (Haliotis iris) were fed...
Roffi Grandiosa et al.
Fish & shellfish immunology, 82, 330-338 (2018-08-21)
We assessed whether dietary administration of a multi-strain probiotic (Exiguobacterium JHEb1, Vibrio JH1 and Enterococcus JHLDc) lead to enhanced immune responsiveness in juvenile New Zealand black-footed abalone (Haliotis iris). Two groups of abalone were fed (1% body weight per day)...
Attilio Naccarato et al.
Analytica chimica acta, 810, 17-24 (2014-01-21)
The work aims at developing a simple and rapid method for the quantification of dopamine (DA), serotonin (5-HT) and norepinephrine (NE) in human urine. The urinary levels of these biogenic amines can be correlated with several pathological conditions concerning heart...
The First Example of Rhodium (I)-Catalyzed Regio-and Stereoselective Chloroesterification of Alkynes with Chloroformate Esters.
Hua R, et al.
Journal of the American Chemical Society, 120(47), 12365-12366 (1998)
Chunlin Li et al.
Neurotoxicity research, 33(4), 812-823 (2017-12-03)
Benzo(a)pyrene (BaP) is a widespread environmental contaminant that has been associated with neurotoxicity in mammals. It has strong toxic effects on the developing central nervous system. Cerebellum is associated with locomotor activity and anxiety behavior, but there is very little...
[A case of acute methylchlorformiate poisoning].
A A Penknovich et al.
Gigiena truda i professional'nye zabolevaniia, (10)(10), 57-58 (1988-10-01)
A simple, sensitive procedure for the determination of tetrahydro-beta-carbolines and their precursors.
T R Bosin
Progress in clinical and biological research, 183, 179-188 (1985-01-01)
Shinji Takenaka et al.
BMC microbiology, 13, 62-62 (2013-03-23)
The agrichemical 4-aminopyridine is used as a bird repellent in crop fields and has an epileptogenic action in a variety of animals, including man and mouse. 4-Aminopyridine is biodegraded in the environment through an unknown mechanism. A 4-aminopyridine-degrading enrichment culture...
R Kronstrand et al.
Journal of analytical toxicology, 20(5), 277-280 (1996-09-01)
A sensitive and simple gas chromatographic--mass spectrometric method is described for the determination of the central nervous system (CNS) stimulant phenmetrazine in urine. The extraction and derivatization were combined into a single step with isooctane and methyl chloroformate. The limit...
Jingjing Zhang et al.
Carbohydrate polymers, 234, 115903-115903 (2020-02-20)
In this study, 2-urea-chitosan oligosaccharide derivatives (2-urea-COS derivatives) and 2,6-diurea-chitosan oligosaccharide derivatives (2,6-diurea-COS derivatives) were successfully designed and synthesized via intermediate 2-methoxyformylated chitosan oligosaccharide. All samples were characterized and compared based on FT-IR, 1H NMR spectroscopy, and elemental analysis. The...

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