Results 281 to 290 of about 204,339 (353)

Moderate Signal Enhancement in Electrospray Ionization Mass Spectrometry by Focusing Electrospray Plume with a Dielectric Layer around the Mass Spectrometer's Orifice. [PDF]

Molecules
Chua ZQ, Prabhu GRD, Wang YW, Raju CM, Buchowiecki K, Ochirov O, Elpa DP, Urban PL.   +7 more
europepmc   +1 more source

Electrospray Ionization Mass Spectrometry

, 1999
openaire  

Dinuclear Rhodium(I)–N‐Heterocyclic Carbene Complexes as Alkyne Hydropyridonation Catalysts

European Journal of Inorganic Chemistry, EarlyView.
Catalyst Improvement by NHC tuning: A series of new RhI–NHC dinuclear complexes has been revealed as efficient alkyne hydropyridonation catalysts. 333053IMes complex displays the highest reactivity of the series, suggesting that a moderate steric demand combined with balanced σ‐donation facilitates precatalyst activation and substrate exchange.
Belinda Español‐Sánchez, Mert Olgun Karataş, Andrea Di Giuseppe, Ulugbek Togaev, Vincenzo Passarelli, Luis A. Oro, Jesús J. Pérez‐Torrente, Ricardo Castarlenas   +7 more
wiley   +1 more source

Uncovering Distinct Peptide Charging Behaviors in Electrospray Ionization Mass Spectrometry Using a Large-Scale Dataset. [PDF]

J Am Soc Mass Spectrom
Xu AM, Tang LC, Jovanovic M, Regev O.
europepmc   +1 more source

Study of Uncatalyzed and Micellar‐Catalyzed Oxidative Degradation of Amoxicillin by Colloidal MnO2: Experimental Optimization and Mechanistic Aspects

European Journal of Organic Chemistry, EarlyView.
The absorption spectra of amoxicillin degradation by colloidal MnO2 in the presence and absence of surfactants. Herein, the oxidative degradation of amoxicillin (AMX) by water‐soluble colloidal MnO2 is investigated spectrophotometrically at 298 K in both uncatalyzed and nonionic micellar‐catalyzed media (Triton X‐100 and Brij‐35).
Neelam Sen, Garima Pravin Pandey, Ajaya K. Singh, Sunita Sanwaria, Sónia A. C. Carabineiro   +4 more
wiley   +1 more source

Sustainability in Analytical Chemistry Illustrated by Pharmaceutical Nitrosamine Testing

ELECTROPHORESIS, EarlyView.
ABSTRACT Following the valsartan scandal in 2018, the testing of drug substances and drug products for N‐nitrosamines has become a critical and mandatory quality control measure. The European Pharmacopoeia chapter 2.5.42 currently describes three analytical methods for this purpose: HPLC–MS/MS, GC–MS, and GC–MS/MS.
Felix Bredendiek, Sebastian Schmidtsdorff, Maria Kristina Parr   +2 more
wiley   +1 more source

Slot Blot- and Electrospray Ionization-Mass Spectrometry/Matrix-Assisted Laser Desorption/Ionization-Mass Spectrometry-Based Novel Analysis Methods for the Identification and Quantification of Advanced Glycation End-Products in the Urine. [PDF]

Int J Mol Sci
Takata T, Inoue S, Kunii K, Masauji T, Miyazawa K.   +4 more
europepmc   +1 more source

Enantioselective Determination of Amphetamine‐Type Stimulants in Environmental Waters Using SPE and CE–MS/MS

ELECTROPHORESIS, EarlyView.
ABSTRACT The growing concern over drug abuse, particularly involving amphetamine‐type substances (ATS), has led to their monitoring in environmental waters. These chiral compounds, commonly found in river water and wastewater treatment plant (WWTP) effluents, require analytical methods capable of enantiomeric discrimination, as their enantiomers can ...
Pol Clivillé‐Cabré, Francesc Borrull, Carme Aguilar, Marta Calull   +3 more
wiley   +1 more source

Integration of ion-mobility high-resolution liquid chromatography/mass spectrometry-based untargeted metabolomics and desorption electrospray ionization-mass spectrometry imaging to unveil the ginsenosides variation induced by steaming for Panax ginseng, P. quinquefolius and P. notoginseng

Yadan Zou, Mengxiang Ding, Huimin Wang, Humin Xie, Meiting Jiang, Yuying Zhao, Xiaoyan Xu, Ying Hu, Xiumei Gao, Hongda Wang, Wenzhi Yang, Hongda Wang, Wenzhi Yang   +12 more
openalex   +1 more source

Epigenotoxicity: Decoding the epigenetic imprints of genotoxic agents and their implications for regulatory genetic toxicology

Environmental and Molecular Mutagenesis, EarlyView.
Abstract Regulatory genetic toxicology focuses on DNA damage and subsequent gene mutations. However, genotoxic agents can also affect epigenetic marks, and incorporation of epigenetic data into the regulatory framework may thus enhance the accuracy of risk assessment.
Roger Godschalk, Christopher Faulk, Jessica LaRocca, Jan van Benthem, Francesco Marchetti   +4 more
wiley   +1 more source