Analysis of Free and Conjugated Ecdysteroids and Polar Metabolites of Insects

Thompson, Malcolm J.; Svoboda, James A.; Feldlaufer, Mark F.

doi:10.1016/b978-0-12-515445-1.50010-0

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1989

1990

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Cited by 3 publications

References 53 publications

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Metastable ions arising from pseudomolecular [M  H]⁻ ions produced by fast‐atom bombardment negative‐ion mass spectrometry of ecdysteroids

Evershed

Prescott

Kabbouh

et al. 1989

Rapid Comm Mass Spectrometry

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Metastable ions arising from pseudomolecular [M-H]- ions produced by fast-atom bombardment negative-ion mass spectrometry of a range of free ecdysteroids, ecdysteroid conjugates and polar metabolites were investigated by means of linked scanning at constant B/E. Free ecdysteroids displayed daughter-ion spectra which allow 20-hydroxyecdysteroids and ecdysteroids lacking C-20 hydroxylation to be readily distinguished. The ejection of acetic acid from acetylated ecdysteroids was also readily detectable. Characteristic metastable-ion decomposition of ecdysteroid acids was not observed, presumably as a result of charge localization. High-mass daughter ions were also lacking in the case of phosphate conjugates.

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Metastable ions arising from pseudomolecular [M  H]⁻ ions produced by fast‐atom bombardment negative‐ion mass spectrometry of ecdysteroids

Evershed

Prescott

Kabbouh

et al. 1989

Rapid Comm Mass Spectrometry

View full text Add to dashboard Cite

show abstract

Current Status and Recent Advances in the Chromatography and Mass Spectrometry of Ecdysteroids

Evershed

Kabbouh

Prescott

et al. 1990

Chromatography and Isolation of Insect Hormones and Pheromones

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Advances in techniques for ecdysteroid analysis

Morgan

Marco²

1990

Invertebrate Reproduction & Development

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Analysis of Free and Conjugated Ecdysteroids and Polar Metabolites of Insects

Cited by 3 publications

References 53 publications

Metastable ions arising from pseudomolecular [M  H]⁻ ions produced by fast‐atom bombardment negative‐ion mass spectrometry of ecdysteroids

Metastable ions arising from pseudomolecular [M  H]⁻ ions produced by fast‐atom bombardment negative‐ion mass spectrometry of ecdysteroids

Current Status and Recent Advances in the Chromatography and Mass Spectrometry of Ecdysteroids

Advances in techniques for ecdysteroid analysis

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Analysis of Free and Conjugated Ecdysteroids and Polar Metabolites of Insects

Cited by 3 publications

References 53 publications

Metastable ions arising from pseudomolecular [M  H]− ions produced by fast‐atom bombardment negative‐ion mass spectrometry of ecdysteroids

Metastable ions arising from pseudomolecular [M  H]− ions produced by fast‐atom bombardment negative‐ion mass spectrometry of ecdysteroids

Current Status and Recent Advances in the Chromatography and Mass Spectrometry of Ecdysteroids

Advances in techniques for ecdysteroid analysis

Contact Info

Product

Resources

About

Metastable ions arising from pseudomolecular [M  H]⁻ ions produced by fast‐atom bombardment negative‐ion mass spectrometry of ecdysteroids

Metastable ions arising from pseudomolecular [M  H]⁻ ions produced by fast‐atom bombardment negative‐ion mass spectrometry of ecdysteroids