AI Article Synopsis

  • Triple quadrupole mass spectrometers are crucial for high-throughput quantitation in pharmaceuticals due to their sensitivity and specificity, especially when operated in multiple reaction monitoring (MRM) mode.
  • Recent advancements have improved these instruments to achieve mass resolution of less than 0.1 Dalton, addressing past limitations with interference from matrix components or metabolites.
  • The paper highlights the benefits of enhanced resolution, particularly in reducing interference during analyses (like with mometasone and PPG), maintaining sensitivity, and demonstrating stability during extended operation.

Article Abstract

Triple quadrupole mass spectrometers, when operated in multiple reaction monitoring (MRM) mode, offer a unique combination of sensitivity, specificity, and dynamic range. Consequently, the triple quadrupole is the workhorse for high-throughput quantitation within the pharmaceutical industry. However, in the past, the unit mass resolution of quadrupole instruments has been a limitation when interference from matrix or metabolites cannot be eliminated. With recent advances in instrument design, triple quadrupole instruments now afford mass resolution of less than 0.1 Dalton (Da) full width at half maximum (FWHM). This paper describes the evaluation of an enhanced resolution triple quadrupole mass spectrometer for high-throughput bioanalysis with emphasis on comparison of selectivity, sensitivity, dynamic range, precision, accuracy, and stability under both unit mass (1 Da FWHM) and enhanced (

Download full-text PDF

Source
http://dx.doi.org/10.1002/rcm.824DOI Listing

Publication Analysis

Top Keywords

triple quadrupole
20
quadrupole mass
12
enhanced resolution
8
resolution triple
8
mass spectrometer
8
spectrometer high-throughput
8
dynamic range
8
unit mass
8
mass resolution
8
quadrupole instruments
8

Similar Publications

Article Synopsis
  • The study used a hybrid B3LYP version of Density Functional Theory to analyze the properties of mustard-type cancer drugs, melphalan and bendamustine, in water, focusing on their geometry, vibrational characteristics, and various electrical properties.
  • Findings showed that these drugs have low ionization energies, indicating significant antioxidant potential, with melphalan's zwitterionic form being more stable in water compared to bendamustine's.
  • Advanced calculations using the DLPNO-CCSD(T) method confirmed that the canonical form of bendamustine is more stable in water than its zwitterionic counterpart, along with noting particularly high dipole moments for some structures.
View Article and Find Full Text PDF

Development and validation of an LC-MS/MS method for quantifying total and unbound doravirine in human plasma.

J Chromatogr B Analyt Technol Biomed Life Sci

December 2024

Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa. Electronic address:

A robust LC-MS/MS method was developed to quantify total and unbound doravirine in plasma samples from patients receiving daily doses of 100 mg doravirine, in combination with lamivudine and tenofovir disoproxil fumarate, in a phase 3 clinical trial. The trial is ongoing, and sample analysis is planned to commence once all samples have been collected. The method was validated to quantify both total and unbound doravirine using a single calibration curve.

View Article and Find Full Text PDF

A Simple and Sensitive LC-MS/MS Method for the Determination of Mobocertinib and Its Metabolite Desmethyl-Mobocertinib in Human Plasma and Its Application to Clinical Pharmacokinetic Study.

Biomed Chromatogr

February 2025

Yangzhou University Medical College, Jiangsu Key Laboratory of Experimental & Translational Non-coding RNA Research, Institute of Translational Medicine, Yangzhou University, Yangzhou, Jiangsu Province, China.

Mobocertinib is a potent selective tyrosine kinase inhibitor approved for the treatment of non-small cell lung cancer with activating EGFR exon 20 insertions. The aim of this study was to develop a procedure for liquid chromatography tandem mass spectrometry (LC-MS/MS) for the determination of mobocertinib and its metabolite desmethyl-mobocertinib in human plasma. The human plasma samples were precipitated with acetonitrile and analyzed using a Waters ACQUITY BEH C column coupled to a triple quadrupole mass spectrometer.

View Article and Find Full Text PDF

Purpose: Triple-negative breast cancer (TNBC) is a disease associated with high incidence and high mortality, which is a major problem threatening women's health. Xiaoyao Sanjie Decoction (XYSJD) exhibits remarkable therapeutic efficacy on TNBC; however, the underlying mechanism is unclear. This study verified the efficacy of XYSJD and its active component in the treatment of TNBC and explored its potential mechanism.

View Article and Find Full Text PDF

The Site of Protonation Affects the Dissociation of Protonated α- and β-Pinene Ions.

Rapid Commun Mass Spectrom

March 2025

Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Canada.

Rationale: In electrospray ionization and atmospheric pressure chemical ionization, the protonation site directly guides the ion's dissociation. But what if the site of protonation is ambiguous? In this study, we explored the unimolecular reactions of protonated α- and β-pinene ions with a combination of tandem mass spectrometry and theory. Each has multiple potential protonation sites that influence their chemistry.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!