Liquid chromatography–tandem mass spectrometry for the identification of impurities in d-allethrin samples

Fiori, Jessica; Bragieri, M.; Zanotti, M.; Liverani, Alessandra; Borzatta, Valerio; Mancini, Francesca; Cavrini, Vanni; Andrisano, Vincenza

doi:10.1016/j.chroma.2005.09.010

Cited by 7 publications

(2 citation statements)

References 13 publications

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“…This difference in the chromatographic behavior of the geometric isomers of the aldehyde and ketone-derived hydrazones may be caused by the steric hindrance of the latter or a difference in hydrogen bonding ability. Furthermore, several reports documenting the RP-HPLC separation of different geometric isomers including aromatic hydrazones can be found in literature [17][18][19][20][21], which further support the outcomes of the present study.…”

Section: Resultssupporting

confidence: 91%

HPLC-DAD and MS/MS analysis of novel drug candidates from the group of aromatic hydrazones revealing the presence of geometric isomers

Kovařı́ková

Vávrová

Tomalová

et al. 2008

Journal of Pharmaceutical and Biomedical Analysis

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Section: Resultssupporting

confidence: 91%

HPLC-DAD and MS/MS analysis of novel drug candidates from the group of aromatic hydrazones revealing the presence of geometric isomers

Kovařı́ková

Vávrová

Tomalová

et al. 2008

Journal of Pharmaceutical and Biomedical Analysis

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“…Mechanism of generation of m/z 359 and m/z 177 ions from ethophenprox MS/MS is widely used, not only for high-sensitivity quantification of target compounds, 7,18 but also for elucidation of the structure of unknown ions. [18][19][20][21] to identify the structure of the m/z 359 ion, we performed tandem mass spectrometry (MS/MS). Ether bonds are easily dissociated when a compound is ionized.…”

Section: Apci Mass Spectra Of Ethophenprox and Ethophenprox-dmentioning

confidence: 99%

Fragmentation of a Non-Ester Pyrethroid Insecticide by Atmospheric Pressure Chemical Ionization

Itoh

Kinumi

Inagaki

et al. 2009

Eur J Mass Spectrom (Chichester)

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We elucidated the mechanism of fragmentation of ethophenprox (Mw = 376), a non-ester pyrethroid insecticide, in the presence of a proton, by using tandem mass spectrometry in combination with an atmospheric pressure chemical ionization technique in positive-ion mode. When methanol or acetonitrile was used as a solvent, no protonated ethophenprox ion was observed in the mass spectra even at low cone voltage (10 V), at which solvent cluster ions can exist. Instead of the protonated ion, an unexpected m/z 359 ion was strongly observed under all conditions examined. The product ion spectrum of the m/z 359 ion obtained under low collision energy (20 eV) showed that this ion can be formed through structural rearrangement involving water loss mainly via the six-centered pathway in this system, although two pathways (five-centered and six-centered) to form the m/z 359 ion are suggested in the literature.

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Current literature in mass spectrometry

2006

J. Mass Spectrom.

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In order to keep subscribers up‐to‐date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of mass spectrometry. Each bibliography is divided into 11 sections: 1 Books, Reviews & Symposia; 2 Instrumental Techniques & Methods; 3 Gas Phase Ion Chemistry; 4 Biology/Biochemistry: Amino Acids, Peptides & Proteins; Carbohydrates; Lipids; Nucleic Acids; 5 Pharmacology/Toxicology; 6 Natural Products; 7 Analysis of Organic Compounds; 8 Analysis of Inorganics/Organometallics; 9 Surface Analysis; 10 Environmental Analysis; 11 Elemental Analysis. Within each section, articles are listed in alphabetical order with respect to author (4 Weeks journals ‐ Search completed at 31st. May 2006)

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Liquid chromatography–tandem mass spectrometry for the identification of impurities in d-allethrin samples

Cited by 7 publications

References 13 publications

HPLC-DAD and MS/MS analysis of novel drug candidates from the group of aromatic hydrazones revealing the presence of geometric isomers

HPLC-DAD and MS/MS analysis of novel drug candidates from the group of aromatic hydrazones revealing the presence of geometric isomers

Fragmentation of a Non-Ester Pyrethroid Insecticide by Atmospheric Pressure Chemical Ionization

Current literature in mass spectrometry

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