List of works by Michael Lämmerhofer

A case study of acute human chlorpyrifos poisoning: novel aspects on metabolism and toxicokinetics derived from liquid chromatography-tandem mass spectrometry analysis of urine samples

scientific article published on 5 July 2005

Advances in enantioselective separations using electromigration capillary techniques

scientific article published on January 2009

Alternative high-performance liquid chromatographic peptide separation and purification concept using a new mixed-mode reversed-phase/weak anion-exchange type stationary phase

scientific article published in September 2005

Analysis of quaternary ammonium and phosphonium ionic liquids by reversed-phase high-performance liquid chromatography with charged aerosol detection and unified calibration

scientific article published on 11 September 2008

Bioconjugation of trypsin onto gold nanoparticles: effect of surface chemistry on bioactivity

scientific article published on 08 May 2012

Characterization of a chiral stationary phase by HR/MAS NMR spectroscopy and investigation of enantioselective interaction with chiral ligates by transferred NOE.

scientific article published in March 2004

Chemical recognition of oxidation-specific epitopes in low-density lipoproteins by a nanoparticle based concept for trapping, enrichment, and liquid chromatography-tandem mass spectrometry analysis of oxidative stress biomarkers.

scientific article published on 26 September 2014

Chemoaffinity material for plasmid DNA analysis by high-performance liquid chromatography with condition-dependent switching between isoform and topoisomer selectivity

scientific article published on 21 February 2013

Chiral separations by capillary electrophoresis using cinchona alkaloid derivatives as chiral counter-ions

scientific article published on 01 January 2004

Chirally functionalized anion-exchange type silica monolith for enantiomer separation of 2-aryloxypropionic acid herbicides by non-aqueous capillary electrochromatography

scientific article published in November 2009

Comment on "stereoselective degradation kinetics of theta-cypermethrin in rats".

scientific article published in December 2006

Comparative method evaluation for size and size-distribution analysis of gold nanoparticles

scientific article published in September 2013

Comprehensive impurity profiling of nutritional infusion solutions by multidimensional off-line reversed-phase liquid chromatography × hydrophilic interaction chromatography-ion trap mass-spectrometry and charged aerosol detection with universal cal

scientific article

Deconvolution of electrokinetic and chromatographic contributions to solute migration in stereoselective ion-exchange capillary electrochromatography on monolithic silica capillary columns

scientific article published in September 2008

Determination of chlorpyrifos metabolites in human urine by reversed-phase/weak anion exchange liquid chromatography-electrospray ionisation-tandem mass spectrometry

scientific article published in August 2005

Determination of ethyl sulfate--a marker for recent ethanol consumption--in human urine by CE with indirect UV detection

scientific article published on 01 December 2006

Development of reactive thiol-modified monolithic capillaries and in-column surface functionalization by radical addition of a chromatographic ligand for capillary electrochromatography

scientific article published in July 2004

Direct enantioseparation of underivatized aliphatic 3-hydroxyalkanoic acids with a quinine-based zwitterionic chiral stationary phase

scientific article published on 30 March 2014

Direct high-performance liquid chromatographic enantioseparation of free α-, β- and γ-aminophosphonic acids employing cinchona-based chiral zwitterionic ion exchangers

scientific article published on 09 June 2013

Direct high-performance liquid chromatographic method for enantioselective and diastereoselective determination of selected pyrethroic acids

scientific article published in April 2004

Direct high-performance liquid chromatographic separation of peptide enantiomers: study on chiral recognition by systematic evaluation of the influence of structural features of the chiral selectors on enantioselectivity

scientific article published in November 2002

Direct separation and quantitative analysis of thyroxine and triiodothyronine enantiomers in pharmaceuticals by high-performance liquid chromatography

scientific article published in February 2004

Electrolyte and additive effects on enantiomer separation of peptides by nonaqueous ion-pair capillary electrophoresis using tert.-butylcarbamoylquinine as chiral counterion

scientific article

Enantiomer separation and indirect chromatographic absolute configuration prediction of chiral pirinixic acid derivatives: Limitations of polysaccharide-type chiral stationary phases in comparison to chiral anion-exchangers

scientific article published on 21 October 2009

Enantiomer separation of a powerful chiral auxiliary, 2-methoxy-2-(1-naphthyl)propionic acid by liquid chromatography using chiral anion exchanger-type stationary phases in polar-organic mode; investigation of molecular recognition aspects.

scientific article

Enantiomeric impurity profiling in ephedrine samples by enantioselective capillary electrochromatography

scientific article published in August 2003

Enantioselective HPLC of potentially CNS-active acidic amino acids with a Cinchona carbamate based chiral stationary phase.

scientific article published in March 2008

Enantioselective silica-based monoliths modified with a novel aminosulfonic acid-derived strong cation exchanger for electrically driven and pressure-driven capillary chromatography

scientific article published in April 2008

Enantioselective strong cation-exchange molecular recognition materials: design of novel chiral stationary phases and their application for enantioseparation of chiral bases by nonaqueous capillary electrochromatography

scientific article published in May 2003

Enantioseparation of chiral sulfonates by liquid chromatography and subcritical fluid chromatography

scientific article published on 23 July 2012

Estimation and comparison of zeta-potentials of silica-based anion-exchange type porous particles for capillary electrochromatography from electrophoretic and electroosmotic mobility

scientific article published on 01 January 2003

Gold nanoparticle-antibody conjugates for specific extraction and subsequent analysis by liquid chromatography-tandem mass spectrometry of malondialdehyde-modified low density lipoprotein as biomarker for cardiovascular risk

scientific article published on 16 December 2014

Gold nanoparticle-conjugated anti-oxidized low-density lipoprotein antibodies for targeted lipidomics of oxidative stress biomarkers

scientific article published on 16 August 2013

HPLC enantiomer separation of a chiral 1,4-dihydropyridine monocarboxylic acid

scientific article published in April 2004

Hydrophilic interaction chromatography in nonaqueous elution mode for separation of hydrophilic analytes on silica-based packings with noncharged polar bondings

scientific article

Impact of stereochemistry on biological effects of permethrin: induction of apoptosis in human hepatoma cells (HCC-1.2) and primary rat hepatocyte cultures

article

In-line coupling of a reversed-phase column to cope with limited chemoselectivity of a quinine carbamate-based anion-exchange type chiral stationary phase

scientific article published on June 2008

Investigations of mobile phase contributions to enantioselective anion- and zwitterion-exchange modes on quinine-based zwitterionic chiral stationary phases.

scientific article published on 25 December 2008

Investigations of molecular recognition aspects related to the enantiomer separation of 2-methoxy-2-(1-naphthyl)propionic acid using quinine carbamate as chiral selector: An NMR and FT-IR spectroscopic as well as X-ray crystallographic study

scientific article published in November 2005

Ligand-receptor binding increments in enantioselective liquid chromatography

scientific article published on 9 May 2014

Liquid chromatographic enantiomer separation and chiral recognition by cinchona alkaloid-derived enantioselective separation materials.

scientific article published on January 2008

Low-molecular-weight chiral cation exchangers: novel chiral stationary phases and their application for enantioseparation of chiral bases by nonaqueous capillary electrochromatography

scientific article published in February 2002

Macroporous monolithic chiral stationary phases for capillary electrochromatography: New chiral monomer derived from cinchona alkaloid with enhanced enantioselectivity

scientific article published in September 2003

Metabolic profiling of intracellular metabolites in fermentation broths from beta-lactam antibiotics production by liquid chromatography-tandem mass spectrometry methods

scientific article published on 20 November 2009

Methods for the comprehensive structural elucidation of constitution and stereochemistry of lipopeptides

scientific article published on 05 June 2015

Micro-HPLC and standard-size HPLC for the separation of peptide stereoisomers employing an ion-exchange principle

scientific article

Mixed-mode chromatography with zwitterionic phosphopeptidomimetic selectors from Ugi multicomponent reaction

scientific article published in August 2013

Mixed-mode ion-exchangers and their comparative chromatographic characterization in reversed-phase and hydrophilic interaction chromatography elution modes

scientific article published in August 2008

Mixed-mode stationary phases as a complementary selectivity concept in liquid chromatography-tandem mass spectrometry-based bioanalytical assays

scientific article published on 01 January 2008

Molecular recognition principles and stationary-phase characteristics of topoisomer-selective chemoaffinity materials for chromatographic separation of circular plasmid DNA topoisomers

scientific article published on 22 December 2011

Monolithic silica-based capillary column with strong chiral cation-exchange type surface modification for enantioselective non-aqueous capillary electrochromatography

scientific article published on 18 January 2006

Multi-modal applicability of a reversed-phase/weak-anion exchange material in reversed-phase, anion-exchange, ion-exclusion, hydrophilic interaction and hydrophobic interaction chromatography modes

scientific article published on 19 February 2011

Multitarget quantitative metabolic profiling of hydrophilic metabolites in fermentation broths of β-lactam antibiotics production by HILIC-ESI-MS/MS.

scientific article published on 26 January 2010

Novel enantioselective strong cation exchangers based on sulfodipeptide selectors: evaluation for enantiomer separation of chiral bases by nonaqueous capillary electrochromatography

scientific article published in January 2004

Phosphopeptidomimetic substance libraries from multicomponent reaction: enantioseparation on quinidine carbamate stationary phase

scientific article

Polymethacrylate-type monoliths functionalized with chiral amino phosphonic acid-derived strong cation exchange moieties for enantioselective nonaqueous capillary electrochromatography and investigation of the chemical composition of the monolithic

scientific article published on 01 May 2005

Quantifying thiol ligand density of self-assembled monolayers on gold nanoparticles by inductively coupled plasma-mass spectrometry

scientific article published on 29 January 2013

Quantitative LC-ESI-MS/MS metabolic profiling method for fatty acids and lipophilic metabolites in fermentation broths from beta-lactam antibiotics production

scientific article published on 19 December 2009

Quantitative high-performance liquid chromatography-tandem mass spectrometry impurity profiling methods for the analysis of parenteral infusion solutions for amino acid supplementation containing L-alanyl-L-glutamine

scientific article published on 18 January 2012

Quinine carbamate chiral stationary phases: systematic optimization of steric selector-selectand binding increments and enantioselectivity by quantitative structure-enantioselectivity relationship studies

scientific article published on 01 July 2006

Quinine-Based Zwitterionic Chiral Stationary Phase as a Complementary Tool for Peptide Analysis: Mobile Phase Effects on Enantio- and Stereoselectivity of Underivatized Oligopeptides

scientific article published on 20 October 2015

Selectivity issues in targeted metabolomics: Separation of phosphorylated carbohydrate isomers by mixed-mode hydrophilic interaction/weak anion exchange chromatography.

scientific article published on November 2010

Separation of Cinchona alkaloids on a novel strong cation-exchange-type chiral stationary phase-comparison with commercially available strong cation exchanger and reversed-phase packing materials

scientific article

Silica-based monolithic columns with mixed-mode reversed-phase/weak anion-exchange selectivity principle for high-performance liquid chromatography

scientific article published on 01 May 2006

Simultaneous quantification of mefloquine (+)- and (-)-enantiomers and the carboxy metabolite in dried blood spots by liquid chromatography/tandem mass spectrometry

scientific article published on 25 November 2013

Single-step Ugi multicomponent reaction for the synthesis of phosphopeptidomimetics

scientific article published on 8 October 2013

Stationary phase-related investigations of quinine-based zwitterionic chiral stationary phases operated in anion-, cation-, and zwitterion-exchange modes

scientific article published on 25 December 2008

Stereoselective separations of chiral phosphinic acid pseudodipeptides by CEC using silica monoliths modified with an anion-exchange-type chiral selector

scientific article published on 01 November 2006

Surface-anchored counterions on weak chiral anion-exchangers accelerate separations and improve their compatibility for mass-spectrometry-hyphenation

scientific article published on 28 April 2017

Synergistic effects on enantioselectivity of zwitterionic chiral stationary phases for separations of chiral acids, bases, and amino acids by HPLC.

scientific article

Synthesis and application of novel phenylboronate affinity materials based on organic polymer particles for selective trapping of glycoproteins.

scientific article published in May 2009

Time-resolved chloroquine-induced relaxation of supercoiled plasmid DNA.

scientific article published on 16 July 2011

Topology-selective chromatography reveals plasmid supercoiling shifts during fermentation and allows rapid and efficient preparation of topoisomers

scientific article published on 16 November 2011

Validated method for the determination of the ethanol consumption markers ethyl glucuronide, ethyl phosphate, and ethyl sulfate in human urine by reversed-phase/weak anion exchange liquid chromatography-tandem mass spectrometry

scientific article published on 01 August 2006

Zwitterionic codeine-derived methacrylate monoliths for enantioselective capillary electrochromatography of chiral acids and chiral bases

scientific article published on 25 July 2018

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