Results 131 to 140 of about 119,736 (261)

Innovative Application of a Multifunctional Sucrose-Gelatin Hydrogel Matrix in Desorption Electrospray Ionization-Mass Spectrometry Imaging. [PDF]

Anal Chem
Ziaco M, Vitale GA, Barra G, Marfella B, dell'Isola M, Albiani F, Grazioso A, Giamundo G, Nuzzo G, Manzo E, Gallo C, Castiglia D, Verrillo L, Miano MG, Cristino L, Conte I, d'Ippolito G, Fontana A.   +17 more
europepmc   +1 more source

Evaluation of Different Detection and Identification Methods of Intact Tetrahydro‐Methyltestosterone Sulfate Metabolites in Doping Control

Drug Testing and Analysis, EarlyView.
The micro‐scale synthesis of the six out of eight possible tetrahydro‐methyltestosterone sulfate metabolites was performed, and the synthesized materials were used as analytical standards. The analysis of post‐administration sample extracts from methyltestosterone excretion studies against these standards provides further experimental proof for their ...
Yiannis S. Angelis, Olga Goula, Polyxeni Kiousi, Panagiotis Sakellariou   +3 more
wiley   +1 more source

Extractive Electrospray Ionization Mass Spectrometry for Rapid Analysis of Organic and Inorganic Selenium in Honey. [PDF]

Molecules
Zhang X, Qiu Y, Xing H, Yang F, Zeng P, Fan H, Chen H, Fang X.   +7 more
europepmc   +1 more source

Desorptions Electrospray Ionization [PDF]

, 2019
openaire   +1 more source

Effect of Reaction Time and Temperature on the Impurity Profile of Amphetamine in the Leuckart Method

Drug Testing and Analysis, EarlyView.
This study investigates the effect of the reaction temperature (step 1) and reaction time (step 1 and 2) on the conversion efficiency and impurity profile of amphetamine synthesized via the Leuckart method. Conversion efficiency and impurity profile were assessed using gas chromatography–flame ionization detection (GC–FID) and GC–mass spectrometry (GC ...
Maartje C. M. Verhoeven, Robert C. Huls, Nelly W. van der Stelt, Jelle C. de Koning, Marco van Grol, Ruben F. Kranenburg, Arian C. van Asten, Janneke W. Hulshof   +7 more
wiley   +1 more source

Nanobubbles in Electrospray Ionization Mass Spectrometry. [PDF]

Anal Chem
Joseph G, Binny B, Venter AR.
europepmc   +1 more source

In Vivo and In Vitro Evaluation of PTeCA (1H‐Pyrrole‐2,3,4,5‐Tetracarboxylic Acid) in Hair Matrix as a Marker for Oxidative Cosmetic Treatment

Drug Testing and Analysis, EarlyView.
A total of 3378 self‐reported treated and untreated hair samples were analyzed for PTCA and PTeCA by LC‐MS/MS. Moreover, their in vitro formation was assessed in 225 untreated hair by different cosmetic treatments with and without oxidative agents. Data suggest that PTeCA could be a reliable marker for oxidative cosmetic treatments in hair.
Sara Casati, Alessandro Ravelli, Roberta F. Bergamaschi, Agata Magliocco, Sofia Vanerio, Gabriella Roda, Paola Rota, Marica Orioli, Alessio Battistini   +8 more
wiley   +1 more source

Oxygen Isotope Analyses of Phosphate and Organophosphorus Compounds by Electrospray Ionization Orbitrap Mass Spectrometry. [PDF]

Anal Chem
Bernet NM, Soldini C, Felder TMO, Lapčíková K, Neubauer C, Queen WL, Kaegi R, Tamburini F, Hofstetter TB.   +8 more
europepmc   +1 more source

Triptindane‐9,10,11‐triol: Threefold Hydride Transfer from Lithium Aluminum Hydride as the Key Step to C3‐Symmetrically Trifunctionalized Tribenzo[3.3.3]propellanes

European Journal of Organic Chemistry, EarlyView.
Threefold reduction of 9,10,11‐triptindanetrione with LiAlH4 or NaBH4 yields exclusively the C3‐symmetric triol, suggesting an intracomplex (“rolling”) mechanism. However, use of LiAlH4/LiAlD4 (1 : 1) reveals a preceding hydride exchange. Mechanistic implications are discussed including the reduction of the related diketone.
Thorsten Hackfort, Bernhard M. Malorny, Andreas Mix, Beate Neumann, Hans‐Georg Stammler, Dietmar Kuck   +5 more
wiley   +1 more source

Enhancing Hydroxyl Metabolite Analysis through In Situ Derivatization-Enabled Desorption Electrospray Ionization-Mass Spectrometry. [PDF]

Anal Chem
Lin YC, Chen GY, Jheng YJ, Liao HW.
europepmc   +1 more source