Results 11 to 20 of about 141,863 (280)

Studies using HPLC-PDA in gabapentin N-derivatization reactions with 9-fluorenylmethyl chloroformate (FMOC-Cl)

Química Nova, 2021
FMOC-Cl is a derivatizing agent widely used both in N-protection reactions of α-amino acids as well as in quantification and detection of amino acids and related molecules using HPLC-PDA or fluorescence analysis.
Emanoel Hottes, Carla Regina G. R. Santos, Heloisa J. M. de Souza, Marco Edilson F. Lima, Rosane N. Castro   +4 more
doaj   +1 more source

Toxic phenolic compounds in the Egyptian coastal waters of Alexandria:spatial distribution,source identification,and ecological risk assessment

Water Science, 2022
Poor published data are available for the detections of toxic phenolic compounds in the Egyptian Mediterranean Coast. Seasonal and spatial distributions of eight driven toxic phenolic compounds in coastal waters of Alexandria from ten different locations,
Naglaa A. El-Naggar, Madelyn N. Moawad, Eman F. Ahmed   +2 more
doaj   +1 more source

Research Progress of Derivatization Method in MALDI Mass Spectrometry Imaging [PDF]

Zhipu Xuebao, 2021
Matrix-assisted laser desorption ionization (MALDI) mass spectrometry imaging (MSI) has been developed rapidly in recent years and has been widely used in many fields.
WANG Shan-shan, ZHANG Qiang, GUO Yin-long   +2 more
doaj   +1 more source

Use of Trifluoro-Acetate Derivatives for GC-MS and GC-MS/MS Quantification of Trace Amounts of Stera-3β,5α,6β-Triols (Tracers of Δ⁵-Sterol Autoxidation) in Environmental Samples

Molecules, 2023
Stera-3β,5α,6β-triols make useful tracers of the autoxidation of Δ5-sterols. These compounds are generally analyzed using gas chromatography–mass spectrometry (GC-MS) after silylation.
Claude Aubert, Jean-François Rontani
doaj   +1 more source

A Newly Developed HPLC-UV/Vis Method Using Chemical Derivatization with 2-Naphthalenethiol for Quantitation of Sulforaphane in Rat Plasma

Molecules, 2021
Sulforaphane (SFN), a naturally occurring isothiocyanate, has received significant attention because of its ability to modulate multiple biological functions, including anti-carcinogenic properties.
Kyong-Oh Shin, Kyungho Park
doaj   +1 more source

Next Challenges for the Comprehensive Molecular Characterization of Complex Organic Mixtures in the Field of Sustainable Energy

Molecules, 2022
The conversion of lignocellulosic biomass by pyrolysis or hydrothermal liquefaction gives access to a wide variety of molecules that can be used as fuel or as building blocks in the chemical industry.
Anthony Abou-Dib, Frédéric Aubriet, Jasmine Hertzog, Lionel Vernex-Loset, Sébastien Schramm, Vincent Carré   +5 more
doaj   +1 more source

Analysis of Mono-, Di- and Oligosaccharides by CE Using a Two-Stage Derivatization Method and LIF Detection. [PDF]

, 2009
A sensitive CE with LIF method has been developed for quantitative analysis of small carbohydrates. In this work, 17 carbohydrates including mono-, di- and oligosaccharides were simultaneously derivatized with 4-fluoro 7-nitrobenzo furazane (NBD-F) via ...
Barrett, DA, Gattollin, S, Newbury, Henry, Pritchard, Jeremy, Tseng, HM   +4 more
core   +2 more sources

Metabolic Profiling of <em>Lactococcus lactis</em> Under Different Culture Conditions

Molecules, 2012
Gas chromatography mass spectrometry (GC-MS) and headspace gas chromatography mass spectrometry (HS/GC-MS) were used to study metabolites produced by <em>Lactococcus lactis</em> subsp.
Normah Mohd Noor, Syarul Nataqain Baharum, Kamalrul Azlan Azizan   +2 more
doaj   +1 more source

Comparative Investigation of Amino Acids Content in the Dry Extracts of Juno bucharica, Gladiolus Hybrid Zefir, Iris Hungarica, Iris Variegata and Crocus Sativus Raw Materials of Ukrainian Flora

Scientia Pharmaceutica, 2020
The aim of this research was the comparative study of the amino acids content in the dry extracts of Iridaceae plants of Ukrainian flora: Juno bucharica leaves and corms, Gladiolus hybrid Zefir leaves, Iris hungarica and Iris variegata rhizomes, and ...
Olha Mykhailenko, Liudas Ivanauskas, Ivan Bezruk, Roman Lesyk, Victoriya Georgiyants   +4 more
doaj   +1 more source

A Sensitive LC–MS/MS Method for the Quantification of 3-Hydroxybenzo[a]pyrene in Urine-Exposure Assessment in Smokers and Users of Potentially Reduced-Risk Products

Separations, 2021
Benzo[a]pyrene (BaP), a human carcinogen, is formed during the incomplete combustion of organic matter such as tobacco. A suitable biomarker of exposure is the monohydroxylated metabolite 3-hydroxybenzo[a]pyrene (3-OH-BaP). We developed a sensitive LC–MS/
Nadine Rögner, Heinz-Werner Hagedorn, Gerhard Scherer, Max Scherer, Nikola Pluym   +4 more
doaj   +1 more source