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Positive chemical ionization triple-quadrupole mass spectrometry and ab initio computational studies of the multi-pathway fragmentation of phthalates

We report the first positive chemical ionization (PCI) fragmentation mechanisms of phthalates using triple-quadrupole mass spectrometry and ab initio computational studies using density functional theories (DFT).

出版机构:John Wiley & Sons, Ltd.

刊物名称:Journal of Mass Spectrometry

出版时间:2010

ISSN:1076-5174

数据源:报刊文摘

Preparation of Surface Organometallic Catalysts by Gas‐Phase Ligand Stripping and Reactive Landing of Mass‐Selected Ions

Organometallic complexes immobilized on surfaces combine the high selectivity of homogeneous catalysts with the ease of separation of catalyst from products attainable with heterogeneous catalysts.

出版机构:WILEY‐VCH Verlag

刊物名称:Chemistry - A European Journal

出版时间:2010

ISSN:0947-6539

数据源:报刊文摘

Tautomerization in gas‐phase ion chemistry of isomeric C‐8 deoxyguanosine adducts from phenol‐induced DNA damage

Collision induced dissociation (CID) of 8 (43 hydroxyphenyl) 22 deoxyguanosine and 8 (23 hydroxyphenyl) 22 deoxyguanosine was investigated using sequential tandem mass spectrometry.

出版机构:John Wiley & Sons, Ltd.

刊物名称:Journal of Mass Spectrometry

出版时间:2011

ISSN:1076-5174

数据源:报刊文摘

A New Approach to IRMPD Using Selective Ion Dissociation in a Quadrupole Ion Trap

Infrared multiphoton photodissociation (IRMPD) in a quadrupole ion trap is not selective for a parent ion. Product ions are decreased in abundance by continuous sequential dissociation and may be lost below the low mass cut-off.

出版机构:Springer Verlag

刊物名称:Journal of the American Society for Mass Spectrometry

出版时间:2011

ISSN:1044-0305

数据源:报刊文摘

Recent Applications of Phosphoproteomics

Protein phosphorylation plays a key role in the regulation of most cellular processes and the disorder of this process often leads to illness or even cancers.

出版机构:Bentham Science Publishers

刊物名称:Current Proteomics

出版时间:2010

ISSN:1570-1646

数据源:报刊文摘

Development and practical application of a library of CID accurate mass spectra of more than 2,500 toxic compounds for systematic toxicological analysis by LC–QTOF-MS with data-dependent acquisition

A library of collision-induced dissociation (CID) accurate mass spectra has been developed for efficient use of liquid chromatography in combination with hybrid quadrupole time-of-flight mass spectrometry (LC QTOF-MS) as a tool in systematic toxicological analysis.

出版机构:Springer Verlag

刊物名称:Analytical and Bioanalytical Chemistry

出版时间:2011

ISSN:1618-2642

数据源:报刊文摘

Collision induced dissociation in a flowing afterglow-tandem mass spectrometer for the selective detection of C5 unsaturated alcohols and isoprene

Based on selective chemical ionization and collision induced dissociation of ions, six unsaturated C5 alcohols and isoprene were identified by flowing afterglow-tandem mass spectrometry.

出版机构:Elsevier Science

刊物名称:International Journal of Mass Spectrometry

出版时间:2010

ISSN:1387-3806

数据源:报刊文摘

Molecular and mass spectral identification of the broadly conserved decapod crustacean neuropeptide pQIRYHQCYFNPISCF: The first PISCF-allatostatin (Manduca sexta- or C-type allatostatin) from a non-insect

The PISCF-allatostatins (Manduca sexta- or C-type allatostatins) are a family of pentadecapeptides characterized by a pyroglutamine blocked N-terminus, an unamidated-PISCF C-terminus, and a disulfide bridge between two internal Cys residues.

出版机构:Elsevier Science

刊物名称:General and Comparative Endocrinology

出版时间:2010

ISSN:0016-6480

数据源:报刊文摘

Structural analysis of the anti-arthritic drug Auranofin: Its complexes with cysteine, selenocysteine and their fragmentation products

Formation and fragmentation of Auranofin complexes with cysteine and seleocysteine.Positive mode electrospray mass spectrometry was used to investigate complexes of cysteine and selenocysteine with the metallo-drug Auranofin and the analogous chlorotriethylphosphine gold.

出版机构:Elsevier Science

刊物名称:Inorganica Chimica Acta

出版时间:2010

ISSN:0020-1693

数据源:报刊文摘

Gas phase isomeric differentiation of oleanolic and ursolic acids associated with heptakis-(2,6-di-O-methyl)-β-cyclodextrin by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry

Oleanolic acid (OA) and ursolic acid (UA) are isomeric triterpenoid compounds with similar pharmaceutical properties. Usually, modern chromatographic and electrophoretic methods are widely utilized to differentiate these two compounds.

出版机构:John Wiley & Sons, Ltd.

刊物名称:Journal of Mass Spectrometry

出版时间:2010

ISSN:1076-5174

数据源:报刊文摘