Results 201 to 210 of about 3,602,918 (298)

Simultaneous Detection of Steroid Esters and Multi‐Class Substances in Dried Blood Spots by LC‐HRMS/MS From a Single Spot for Human Doping Control

Drug Testing and Analysis, EarlyView.
A validated LC‐HRMS/MS method enabled, for the first time, the comprehensive detection of steroid esters and multi‐class menu substances from a single dried blood spot. Following extraction, the resulting extract is split into two aliquots, reducing sample consumption and simplifying the analytical workflow.
Panagiotis Sakellariou, Andreas Thomas, Sebastian Marcel Schröder, Jasmin Thelen, Mario Thevis   +4 more
wiley   +1 more source

Ionization efficiency prediction of electrospray ionization mass spectrometry analytes based on molecular fingerprints and cumulative neutral losses. [PDF]

J Cheminform
Nikolopoulos A, van Herwerden D, Turkina V, Kruve A, Baerenfaenger M, Samanipour S.   +5 more
europepmc   +1 more source

Retrospective Study on the Power and Interpretation of Chiral Amphetamine Analysis in Hair for Forensic Applications

Drug Testing and Analysis, EarlyView.
A decision model for the interpretation of chiral amphetamine analysis in hair was established based on the enantiomeric fraction (EF) of (S)‐amphetamine in authentic hair samples. Two chiral analysis methods (indirect/direct) were consecutively applied to distinguish between illicit and therapeutic amphetamine use in forensic cases.
Liesl K. Janssens, Milena M. Madry, Andrea E. Steuer, Tina M. Binz   +3 more
wiley   +1 more source

Active Humidity Control Chamber for Desorption Electrospray Ionization-Mass Spectrometry Imaging Applications. [PDF]

J Am Soc Mass Spectrom
Shepard HS, Gottschalk RLG, May JC, McLean JA.   +3 more
europepmc   +1 more source

Systematic Study on Phosphatidylethanol (PEth) Stability and De Novo Formation in Authentic Whole Blood Samples

Drug Testing and Analysis, EarlyView.
PEth 16:0/18:1 was stable for at least 5 months when stored at −20°C/−80°C and during non‐temperature controlled postal transport, but PEth 16:0/18:2 showed rapid degradation during transport and at room temperature (RT). Significant Peth 16:0/18:1 de novo formation was observed when stored at −20°C and RT as early as 14 h after sample collection ...
Lana Brockbals, Alina Inderbitzin, Thomas Kraemer, Andrea E. Steuer   +3 more
wiley   +1 more source

High-Throughput Drug Derivatization and Bioassay by Desorption Electrospray Ionization Mass Spectrometry. [PDF]

Chempluschem
Ghosh J, Morato NM, Feng Y, Cooks RG.
europepmc   +1 more source

Further Extensive Evaluation of GHB‐Pentose as a Novel Biomarker for the Extended Detection of GHB Intake/Administration in Forensic Casework

Drug Testing and Analysis, EarlyView.
Analysis (LC–MS/MS, multiple reaction monitoring [MRM], hydrophilic interaction liquid chromatography [HILIC], and reversed‐phase [RP]) of 2414 authentic forensic urine samples demonstrated that GHB‐pentose (GHB‐P) is a highly specific marker of exogenous GHB exposure.
Katja Gimmler, Lana Brockbals, Sandra N. Poetzsch, Francesco Bavato, Laura K. Schnider, Dario A. Dornbierer, Oliver G. Bosch, Boris B. Quednow, Erich Seifritz, Christian Steuer, Thomas Kraemer, Andrea E. Steuer   +11 more
wiley   +1 more source

Antibody-Drug Conjugate Stability Probed by Variable-Temperature Electrospray Ionization Mass Spectrometry. [PDF]

J Am Soc Mass Spectrom
Fiala J, Schuster D, Heck AJR.
europepmc   +1 more source

Ligand Effect‐Inspired Scalable Synthesis and Catalytic CO2 Fixation of Cobalt Nanoclusters

EcoEnergy, EarlyView.
Ligand investigation uncovers a positively charged intermediate during cluster formation, which is applied for optimizing synthetic procedures and achieving large‐scale synthesis of cobalt nanoclusters. Further modification on the functional group of ligands triggers efficient nanocluster catalysis via Co–N synergy.
Jia‐Xu Guo, Ying Zhang, Chun‐Lian Lin, Huan Wang, Sheng Zhang, Man‐Bo Li   +5 more
wiley   +1 more source

Critical Role of Voltage Application Points in "Analog" and "Digital" Electrospray Ionization Mass Spectrometry. [PDF]

J Am Soc Mass Spectrom
Hung MM, Elpa DP, Ochirov O, Urban PL.
europepmc   +1 more source