Results 221 to 230 of about 198,485 (311)

Identification of Secondary Metabolites from the Lichen <i>Hypotrachyna enderythraea</i> (Zahlbr.) Hale by HPLC-ESI-MS/MS. [PDF]

Molecules
Carrasco F, Hernández W, Castro N, Sivipaucar N, Bongiorno B, Chupayo O, Raposo C, Silva LA, Rodilla JM, Carrasco E, Dávalos JZ.   +10 more
europepmc   +1 more source

Identification and Characterization of the Designer Opioid N‐Pyrrolidino Fluetonitazene in Nasal Spray

Drug Testing and Analysis, EarlyView.
N‐Pyrrolidino fluetonitazene, a synthetic opioid, was identified and characterized in a nasal spray using GC‐MS, LC‐QTOF‐MS, NMR and FT‐IR. ABSTRACT Detection of drugs in non‐biological samples serves as a fundamental basis for identifying emerging trends in the field of new psychoactive substances and provides valuable information for optimizing ...
Fabian Picht, Valentin Cepus, Rona Hohlfeld, Julian Klingbeil, Marco Weber   +4 more
wiley   +1 more source

Comprehensive profiling of arsenosugars in algae using UHPLC-HRMS and UHPLC-IMS-Q-TOF. [PDF]

Anal Bioanal Chem
Morales-Rodríguez A, Sahuquillo À, López-Sánchez JF, Barrón D, Moyano E.   +4 more
europepmc   +1 more source

Analysis and Characterization of Kisspeptin and Its Analogues in Serum and Urine Samples by Liquid Chromatography–High‐Resolution Mass Spectrometry for Doping Control Purposes

Drug Testing and Analysis, EarlyView.
Sensitive LC‐HRMS methods were established for the detection of kisspeptin and its analogues in serum and urine, alongside their analytical and metabolic characterization. Stability studies were conducted in serum, plasma, and urine, highlighting the importance of appropriate sample handling for reliable anti‐doping analysis.
Sophia Krombholz, Linus Korsmeier, Andreas Thomas, Mario Thevis   +3 more
wiley   +1 more source

Switching Ionization Polarity to Simplify MS/MS Sequencing of Digital Polymers: the Case of Informational Poly(Amino phosphodiester)s. [PDF]

Rapid Commun Mass Spectrom
Sergent I, Roszak I, Lutz JF, Charles L.
europepmc   +1 more source

Dynamic Additive Scanning for Precise Control in Electrospray Ionization Mass Spectrometry

ACS Measurement Science Au
I-Ting Wu, Decibel P. Elpa, Hsien-Ning Chien, Pawel L. Urban   +3 more
doaj   +1 more source

Segmental Hair Analysis of Diphenhydramine and Cyclizine Following a Single Dose

Drug Testing and Analysis, EarlyView.
A single oral dose of diphenhydramine and cyclizine can be quantified in human head hair for a minimum of 5 months and, in certain cases, for up to 1 year following intake. Among 12 study participants, the measured concentrations ranged from 0 to 610 pg/mg within 1 year post‐intake.
Jan Bílek, Marie Katrine Klose Nielsen, Robert Kronstrand, Sys Stybe Johansen   +3 more
wiley   +1 more source

A McLafferty-Type Rearrangement in the Pentafluorobenzyl Ester Derivatives of Dialkyl Phosphates in GC-NICI-MS/MS: A Mini-Review and a Meta-Analysis. [PDF]

Molecules
Tsikas D.
europepmc   +1 more source

Elimination Profile of Deflazacort and Metabolites in Urine and Plasma Following Oral Administration: Relevance to Sports Drug Testing

Drug Testing and Analysis, EarlyView.
Results confirm that the MRL of 30 ng/mL for 21‐desacetyl‐deflazacort together with a 3‐day washout period is an appropriated strategy to detect oral deflazacort administration in sport competition. ABSTRACT Deflazacort (DEF) is a glucocorticoid prohibited in sports competitions when orally administered.
Sergi Coll, Claudia Bressan, Núria Monfort, Ana Aldea‐Perona, Marcel·lí Carbó, Rosa Ventura   +5 more
wiley   +1 more source

Small is big: growing impact of small molecule mass spectrometry in infectious disease drug development. [PDF]

mSphere
McCall L-I.
europepmc   +1 more source