List of works - Athula Attygalle

"Meta elimination," a diagnostic fragmentation in mass spectrometry

scientific article published on 03 June 2011

1,4-Benzoquinone as a Highly Efficient Dopant for Enhanced Ionization and Detection of Nitramine Explosives on a Single-Quadrupole Mass Spectrometer Fitted with a Helium-Plasma Ionization (HePI) Source

scientific article published on 31 October 2019

A combined desorption ionization by charge exchange (DICE) and desorption electrospray ionization (DESI) source for mass spectrometry

scientific article published on 20 January 2011

A distonic radical-ion for detection of traces of adventitious molecular oxygen (O2) in collision gases used in tandem mass spectrometers

scientific article published on 8 July 2014

Aliphatic hydrocarbon spectra by helium ionization mass spectrometry (HIMS) on a modified atmospheric-pressure source designed for electrospray ionization

scientific article

Alkaloids of the Mexican Bean Beetle, Epilachna varivestis (Coccinellidae)

Alkyl-Dimethylpyrazines in Mandibular Gland Secretions of Four Odontomachus Ant Species (Formicidae: Ponerinae)

scientific article published on 28 March 2018

Ambulation of Incipient Proton during Gas-Phase Dissociation of Protonated Alkyl Dihydrocinnamates.

scientific article published on 2 September 2015

An unexpected ion-molecule adduct in negative-ion collision-induced decomposition ion-trap mass spectra of halogenated benzoic acids

scientific article published on 01 January 2006

An unprecedented rearrangement in collision-induced mass spectrometric fragmentation of protonated benzylamines

scientific article published on 01 September 2006

Attractive and defensive functions of the ultraviolet pigments of a flower ( Hypericum calycinum ) ⬇️

scientific article published on November 13, 2001

Biosynthesis of epilachnene, a macrocyclic defensive alkaloid of the Mexican bean beetle

Biosynthesis of methacrylic acid and isobutyric acids in a carabid beetle, Scarites subterraneus

scientific article published on 25 July 2002

Biosynthesis of tiglic, ethacrylic, and 2-methylbutyric acids in a carabid beetle, Pterostichus (Hypherpes) californicus

scientific article

Biosynthetic origin of benzoquinones in the explosive discharge of the bombardier beetle Brachinus elongatulus

scientific article published on 16 June 2020

Brimstone chemistry under laser light assists mass spectrometric detection and imaging the distribution of arsenic in minerals

scientific article published on 01 June 2018

Characterization of (E,E)-farnesol and its fatty acid esters from anal scent glands of nutria (Myocastor coypus) by gas chromatography-mass spectrometry and gas chromatography-infrared spectrometry

scientific article published on 27 June 2007

Chilocorine C: A New “Dimeric” Alkaloid from a Coccinellid Beetle, Chilocorus cacti ⬇️

scientific article published on May 1, 1998

Chilocorine: heptacyclic alkaloid from a coccinellid beetle

Circumambulatory movement of negative charge ("ring walk") during gas-phase dissociation of 2,3,4-trimethoxybenzoate anion

scientific article published on 28 April 2014

Collision-induced dissociation mass spectra of glucosinolate anions

scientific article published in March 2010

Collision-induced dissociation mass spectra of positive ions derived from tetrahydropyranyl (THP) ethers of primary alcohols

scientific article published on 30 November 2010

Collision-induced dissociation processes of protonated benzoic acid and related compounds: competitive generation of protonated carbon dioxide or protonated benzene

scientific article

Combinatorial Chemistry in Insects: A Library of Defensive Macrocyclic Polyamines ⬇️

scientific article published on July 17, 1998

Competitive Deprotonation and Superoxide [O₂⁻•)] Radical-Anion Adduct Formation Reactions of Carboxamides under Negative-Ion Atmospheric-Pressure Helium-Plasma Ionization (HePI) Conditions

scientific article

Competitive homolytic and heterolytic decomposition pathways of gas-phase negative ions generated from aminobenzoate esters.

scientific article published in March 2016

Defensive chemicals of two species of Trachypachus Motschulski

scientific article published in March 2004

Desorption ionization by charge exchange (DICE) for sample analysis under ambient conditions by mass spectrometry

scientific article

Detection and imaging of chrome yellow (lead chromate) in latent prints, solid residues, and minerals by laser-desorption/ionization mass spectrometry (LDI-MS).

scientific article

Determination of low levels of 2H-labeling using high-resolution mass spectrometry: application in studies of lipid flux and beyond

scientific article published on February 2014

Direct Detection of Inorganic Nitrate Salts by Ambient Pressure Helium-Plasma Ionization Mass Spectrometry ⬇️

scientific article published on December 11, 2012

Direct detection and identification of active pharmaceutical ingredients in intact tablets by helium plasma ionization (HePI) mass spectrometry

scientific article published on 25 September 2013

Direct detection of solid inorganic mercury salts at ambient pressure by electron-capture and reaction-assisted HePI mass spectrometry.

scientific article

Effect of Electrospray Ionization Source Conditions on the Tautomer Distribution of Deprotonated p-Hydroxybenzoic Acid in the Gas Phase

scientific article published on 10 May 2016

Elemental sulfur as a versatile low-mass-range calibration standard for laser desorption ionization mass spectrometry

scientific article

Enhancement of laser desorption ionization mass spectrometric signals of cesium iodide by elemental sulfur

scientific article

Erratum to: Localization of Fatty Acyl and Double Bond Positions in Phosphatidylcholines Using a Dual Stage CID Fragmentation Coupled with Ion Mobility Mass Spectrometry.

scientific article published on 13 July 2011

Evading metal adduct formation during desorption-ionization mass spectrometry

scientific article published on October 2010

Experimental and Theoretical Studies on Gas-Phase Fragmentation Reactions of Protonated Methyl Benzoate: Concomitant Neutral Eliminations of Benzene, Carbon Dioxide, and Methanol

scientific article published on 07 June 2018

Formation of Carbamate Anions by the Gas-phase Reaction of Anilide Ions with CO2.

scientific article published on 25 February 2016

Formation of Protonated ortho-Quinonimide from ortho-Iodoaniline in the Gas Phase by a Molecular-Oxygen-Mediated, ortho-Isomer-Specific Fragmentation Mechanism

scientific article published on 02 March 2020

Formation of the bisulfite anion (HSO(3) (-) , m/z 81) upon collision-induced dissociation of anions derived from organic sulfonic acids

scientific article published on 01 April 2012

Fortuitous Ion-Molecule Reaction Enables Enumeration of Metal-Hydrogen Bonds Present in Gaseous Ions

scientific article published on 22 February 2019

Gas-phase fragmentation of metal adducts of alkali-metal oxalate salts

scientific article published on 01 March 2014

Gas-phase fragmentations of anions derived from N-phenyl benzenesulfonamides

scientific article published on 19 June 2013

Gas-phase protomers of p-(dimethylamino)chalcone investigated by travelling-wave ion mobility mass spectrometry (TWIMS)

scientific article published on 15 August 2018

Generation and detection of gaseous W12O41-* and other tungstate anions by laser desorption ionization mass spectrometry

scientific article

Generation of gas-phase sodiated arenes such as [(Na3(C6H4)+] from benzene dicarboxylate salts

scientific article published in January 2010

Glandular Pyrazine Emission by a Tropical Katydid: An Example of Chemical Aposematism? (Orthoptera: Tettigoniidae: Copiphorinae: Vestria Stål)

scientific article published in 1996

Gold Nanoparticles (AuNPs) as Reactive Matrix for Detection of Trace Levels of HCN in Air by Laser Desorption/Ionization Mass Spectrometry (LDI-MS)

scientific article published on 07 March 2019

HCN emission by a Polydesmid Millipede Detected Remotely by Reactive Adsorption on Gold Nanoparticles Followed by Laser Desorption/Ionization Mass Spectrometry (LDI-MS)

scientific article published on 22 April 2020

Helium-Plasma-Ionization Mass Spectrometry of Metallocenes and Their Derivatives

scientific article published on 04 January 2021

Hydroxycarbonyl anion (m/z 45), a diagnostic marker for alpha-hydroxy carboxylic acids

scientific article published in February 2009

Identification of alkylpyrazines by gas chromatography mass spectrometry (GC-MS)

scientific article published on 07 January 2019

Influence of Ionization Source Conditions on the Gas-Phase Protomer Distribution of Anilinium and Related Cations

scientific article published on 10 April 2017

Isobutylamides of unsaturated fatty acids from Chrysanthemum morifolium associated with host-plant resistance against the western flower thrips

scientific article published in September 2003

LC-MS analysis of p-aminosalicylic acid under electrospray ionization conditions manifests a profound solvent effect

scientific article published on 22 June 2020

LC/MS characterization of undesired products formed during iodoacetamide derivatization of sulfhydryl groups of peptides

scientific article

Localization of fatty acyl and double bond positions in phosphatidylcholines using a dual stage CID fragmentation coupled with ion mobility mass spectrometry

scientific article

Location of double bonds in diene and triene acetates by partial reduction followed by methylthiolation

scientific article published in June 2005

Loss of benzene to generate an enolate anion by a site-specific double-hydrogen transfer during CID fragmentation of o-alkyl ethers of ortho-hydroxybenzoic acids

scientific article

Low-energy collision-induced dissociation mass spectra of protonated p-toluenesulfonamides derived from aliphatic amines

scientific article published on 28 March 2014

Low-energy collision-induced fragmentation of negative ions derived from diesters of aliphatic dicarboxylic acids made with hydroxybenzoic acids

scientific article published in November 2008

Low-energy collision-induced fragmentation of negative ions derived from ortho-, meta-, and para-hydroxyphenyl carbaldehydes, ketones, and related compounds

scientific article published in September 2007

Metabolic transformations of acquired lucibufagins by firefly “femmes fatales”

scientific article published in 1999

Mild route to generate gaseous metal anions

scientific article published on 01 March 2011

Mirasorvone: A masked 20-ketopregnane from the defensive secretion of a diving beetle ( Thermonectus marmoratus ) ⬇️

scientific article published on March 17, 1998

New Non-Glycosidic Diterpenes from the Leaves ofSteviarebaudiana

scientific article published on 01 October 2003

Nominal Mass?

scientific article

Orange/lemon-scented beetles: opposite enantiomers of limonene as major constituents in the defensive secretion of related carabids

scientific article published on 19 August 2009

Ortho effect in electron ionization mass spectrometry of N-acylanilines bearing a proximal halo substituent

scientific article published on 08 May 2008

Oxidative Ionization Under Certain Negative-Ion Mass Spectrometric Conditions

scientific article

Periodic Trends Manifested through Gas-Phase Generation of Anions Such as [AlH4]-, [GaH4]-, [InH4]-, [SrH3]-, [BaH3]-, [Ba(0)(η2-O2CH)1]-, [Pb(0)H]-, [Bi(I)H2]-, and Bi- from Formates

scientific article published on 23 March 2018

Pygidial gland chemistry and potential alarm-recruitment function in column foraging, but not solitary, Nearctic Messor harvesting ants (Hymenoptera: Formicidae: Myrmicinae).

scientific article published on 26 June 2013

Pyrrolidinoöxazolidine Alkaloids from Two Species of Ladybird Beetles ⬇️

scientific article published on August 1, 1997

Quantification and evidence for mechanically metered release of pygidial secretions in formic acid-producing carabid beetles

scientific article

Quantification and remote detection of nitro explosives by helium plasma ionization mass spectrometry (HePI-MS) on a modified atmospheric pressure source designed for electrospray ionization

scientific article

Reactivity of gaseous sodiated ions derived from benzene dicarboxylate salts toward residual water in the collision gas.

scientific article published in October 2010

Real-time monitoring of in situ gas-phase H/D exchange reactions of cations by atmospheric pressure helium plasma ionization mass spectrometry (HePI-MS).

scientific article

Regulated In Situ Generation of Molecular Ions or Protonated Molecules under Atmospheric-Pressure Helium-Plasma-Ionization Mass Spectrometric Conditions

scientific article

Rendering the inedible edible: Circumvention of a millipede’s chemical defense by a predaceous beetle larva (Phengodidae) ⬇️

scientific article published on February 3, 1998

Reply to the Comment on: "Nominal Mass?" by Athula B. Attygalle and Julius Pavlov, J. Am. Soc. Mass Spectrom. 28, 1737-1738 (2017).

scientific article

Reptilian chemistry: volatile compounds from paracloacal glands of the American crocodile (Crocodylus acutus).

scientific article published in April 2002

Selectivity of gas-phase ion/molecule reaction of carbon dioxide with phenide ions.

scientific article published in August 2014

Self-defensive layer-by-layer films with bacteria-triggered antibiotic release

scientific article

Spirocyclic Defensive Alkaloid from a Coccinellid Beetle

scientific article published on 25 July 2002

Synthesis and absolute configuration of 2-(12′-aminotridecyl)-pyrrolidine, a defensive alkaloid from the Mexican bean beetle, Epilachna varivestis

scientific article published on 13 May 2003

Synthesis of deuterium labeled polyunsaturated fatty acids

Synthesis of positively charged silver nanoparticles via photoreduction of AgNO3 in branched polyethyleneimine/HEPES solutions

scientific article published on 17 August 2007

Therapeutic prognosis of prostate cancer using surface-enhanced Raman scattering of patient urine and multivariate statistical analysis

scientific article published on 09 September 2020

Trail Pheromone of the Myrmicine Ant Aphaenogaster rudis (Hymenoptera: Formicidae) ⬇️

scientific article published on January 1, 1998

Transformation of the gas-phase favored O-protomer of p-aminobenzoic acid to its unfavored N-protomer by ion activation in the presence of water vapor: an ion-mobility mass spectrometry study.

scientific article published on 29 January 2018

Untrapping Kinetically Trapped Ions: The Role of Water Vapor and Ion-Source Activation Conditions on the Gas-Phase Protomer Ratio of Benzocaine Revealed by Ion-Mobility Mass Spectrometry.

scientific article

List of works by Athula Attygalle

"Meta elimination," a diagnostic fragmentation in mass spectrometry

1,4-Benzoquinone as a Highly Efficient Dopant for Enhanced Ionization and Detection of Nitramine Explosives on a Single-Quadrupole Mass Spectrometer Fitted with a Helium-Plasma Ionization (HePI) Source

A combined desorption ionization by charge exchange (DICE) and desorption electrospray ionization (DESI) source for mass spectrometry

A distonic radical-ion for detection of traces of adventitious molecular oxygen (O2) in collision gases used in tandem mass spectrometers

Aliphatic hydrocarbon spectra by helium ionization mass spectrometry (HIMS) on a modified atmospheric-pressure source designed for electrospray ionization

Alkaloids of the Mexican Bean Beetle, Epilachna varivestis (Coccinellidae)

Alkyl-Dimethylpyrazines in Mandibular Gland Secretions of Four Odontomachus Ant Species (Formicidae: Ponerinae)

Ambulation of Incipient Proton during Gas-Phase Dissociation of Protonated Alkyl Dihydrocinnamates.

An unexpected ion-molecule adduct in negative-ion collision-induced decomposition ion-trap mass spectra of halogenated benzoic acids

An unprecedented rearrangement in collision-induced mass spectrometric fragmentation of protonated benzylamines

Attractive and defensive functions of the ultraviolet pigments of a flower ( Hypericum calycinum ) ⬇️

Biosynthesis of epilachnene, a macrocyclic defensive alkaloid of the Mexican bean beetle

Biosynthesis of methacrylic acid and isobutyric acids in a carabid beetle, Scarites subterraneus

Biosynthesis of tiglic, ethacrylic, and 2-methylbutyric acids in a carabid beetle, Pterostichus (Hypherpes) californicus

Biosynthetic origin of benzoquinones in the explosive discharge of the bombardier beetle Brachinus elongatulus

Brimstone chemistry under laser light assists mass spectrometric detection and imaging the distribution of arsenic in minerals

Characterization of (E,E)-farnesol and its fatty acid esters from anal scent glands of nutria (Myocastor coypus) by gas chromatography-mass spectrometry and gas chromatography-infrared spectrometry

Chilocorine C: A New “Dimeric” Alkaloid from a Coccinellid Beetle, Chilocorus cacti ⬇️

Chilocorine: heptacyclic alkaloid from a coccinellid beetle

Circumambulatory movement of negative charge ("ring walk") during gas-phase dissociation of 2,3,4-trimethoxybenzoate anion

Collision-induced dissociation mass spectra of glucosinolate anions

Collision-induced dissociation mass spectra of positive ions derived from tetrahydropyranyl (THP) ethers of primary alcohols

Collision-induced dissociation processes of protonated benzoic acid and related compounds: competitive generation of protonated carbon dioxide or protonated benzene

Combinatorial Chemistry in Insects: A Library of Defensive Macrocyclic Polyamines ⬇️

Competitive Deprotonation and Superoxide [O₂⁻•)] Radical-Anion Adduct Formation Reactions of Carboxamides under Negative-Ion Atmospheric-Pressure Helium-Plasma Ionization (HePI) Conditions

Competitive homolytic and heterolytic decomposition pathways of gas-phase negative ions generated from aminobenzoate esters.

Defensive chemicals of two species of Trachypachus Motschulski

Desorption ionization by charge exchange (DICE) for sample analysis under ambient conditions by mass spectrometry

Detection and imaging of chrome yellow (lead chromate) in latent prints, solid residues, and minerals by laser-desorption/ionization mass spectrometry (LDI-MS).

Determination of low levels of 2H-labeling using high-resolution mass spectrometry: application in studies of lipid flux and beyond

Direct Detection of Inorganic Nitrate Salts by Ambient Pressure Helium-Plasma Ionization Mass Spectrometry ⬇️

Direct detection and identification of active pharmaceutical ingredients in intact tablets by helium plasma ionization (HePI) mass spectrometry

Direct detection of solid inorganic mercury salts at ambient pressure by electron-capture and reaction-assisted HePI mass spectrometry.

Effect of Electrospray Ionization Source Conditions on the Tautomer Distribution of Deprotonated p-Hydroxybenzoic Acid in the Gas Phase

Elemental sulfur as a versatile low-mass-range calibration standard for laser desorption ionization mass spectrometry

Enhancement of laser desorption ionization mass spectrometric signals of cesium iodide by elemental sulfur

Erratum to: Localization of Fatty Acyl and Double Bond Positions in Phosphatidylcholines Using a Dual Stage CID Fragmentation Coupled with Ion Mobility Mass Spectrometry.

Evading metal adduct formation during desorption-ionization mass spectrometry

Experimental and Theoretical Studies on Gas-Phase Fragmentation Reactions of Protonated Methyl Benzoate: Concomitant Neutral Eliminations of Benzene, Carbon Dioxide, and Methanol

Formation of Carbamate Anions by the Gas-phase Reaction of Anilide Ions with CO2.

Formation of Protonated ortho-Quinonimide from ortho-Iodoaniline in the Gas Phase by a Molecular-Oxygen-Mediated, ortho-Isomer-Specific Fragmentation Mechanism

Formation of the bisulfite anion (HSO(3) (-) , m/z 81) upon collision-induced dissociation of anions derived from organic sulfonic acids

Fortuitous Ion-Molecule Reaction Enables Enumeration of Metal-Hydrogen Bonds Present in Gaseous Ions

Gas-phase fragmentation of metal adducts of alkali-metal oxalate salts

Gas-phase fragmentations of anions derived from N-phenyl benzenesulfonamides

Gas-phase protomers of p-(dimethylamino)chalcone investigated by travelling-wave ion mobility mass spectrometry (TWIMS)

Generation and detection of gaseous W12O41-* and other tungstate anions by laser desorption ionization mass spectrometry

Generation of gas-phase sodiated arenes such as [(Na3(C6H4)+] from benzene dicarboxylate salts

Glandular Pyrazine Emission by a Tropical Katydid: An Example of Chemical Aposematism? (Orthoptera: Tettigoniidae: Copiphorinae: Vestria Stål)

Gold Nanoparticles (AuNPs) as Reactive Matrix for Detection of Trace Levels of HCN in Air by Laser Desorption/Ionization Mass Spectrometry (LDI-MS)

HCN emission by a Polydesmid Millipede Detected Remotely by Reactive Adsorption on Gold Nanoparticles Followed by Laser Desorption/Ionization Mass Spectrometry (LDI-MS)

Helium-Plasma-Ionization Mass Spectrometry of Metallocenes and Their Derivatives

Hydroxycarbonyl anion (m/z 45), a diagnostic marker for alpha-hydroxy carboxylic acids

Identification of alkylpyrazines by gas chromatography mass spectrometry (GC-MS)

Influence of Ionization Source Conditions on the Gas-Phase Protomer Distribution of Anilinium and Related Cations

Isobutylamides of unsaturated fatty acids from Chrysanthemum morifolium associated with host-plant resistance against the western flower thrips

LC-MS analysis of p-aminosalicylic acid under electrospray ionization conditions manifests a profound solvent effect

LC/MS characterization of undesired products formed during iodoacetamide derivatization of sulfhydryl groups of peptides

Localization of fatty acyl and double bond positions in phosphatidylcholines using a dual stage CID fragmentation coupled with ion mobility mass spectrometry

Location of double bonds in diene and triene acetates by partial reduction followed by methylthiolation

Loss of benzene to generate an enolate anion by a site-specific double-hydrogen transfer during CID fragmentation of o-alkyl ethers of ortho-hydroxybenzoic acids

Low-energy collision-induced dissociation mass spectra of protonated p-toluenesulfonamides derived from aliphatic amines

Low-energy collision-induced fragmentation of negative ions derived from diesters of aliphatic dicarboxylic acids made with hydroxybenzoic acids

Low-energy collision-induced fragmentation of negative ions derived from ortho-, meta-, and para-hydroxyphenyl carbaldehydes, ketones, and related compounds

Metabolic transformations of acquired lucibufagins by firefly “femmes fatales”

Mild route to generate gaseous metal anions

Mirasorvone: A masked 20-ketopregnane from the defensive secretion of a diving beetle ( Thermonectus marmoratus ) ⬇️

New Non-Glycosidic Diterpenes from the Leaves ofSteviarebaudiana

Nominal Mass?

Orange/lemon-scented beetles: opposite enantiomers of limonene as major constituents in the defensive secretion of related carabids

Ortho effect in electron ionization mass spectrometry of N-acylanilines bearing a proximal halo substituent

Oxidative Ionization Under Certain Negative-Ion Mass Spectrometric Conditions

Periodic Trends Manifested through Gas-Phase Generation of Anions Such as [AlH4]-, [GaH4]-, [InH4]-, [SrH3]-, [BaH3]-, [Ba(0)(η2-O2CH)1]-, [Pb(0)H]-, [Bi(I)H2]-, and Bi- from Formates

Pygidial gland chemistry and potential alarm-recruitment function in column foraging, but not solitary, Nearctic Messor harvesting ants (Hymenoptera: Formicidae: Myrmicinae).

Pyrrolidinoöxazolidine Alkaloids from Two Species of Ladybird Beetles ⬇️

Quantification and evidence for mechanically metered release of pygidial secretions in formic acid-producing carabid beetles

Quantification and remote detection of nitro explosives by helium plasma ionization mass spectrometry (HePI-MS) on a modified atmospheric pressure source designed for electrospray ionization

Reactivity of gaseous sodiated ions derived from benzene dicarboxylate salts toward residual water in the collision gas.

Real-time monitoring of in situ gas-phase H/D exchange reactions of cations by atmospheric pressure helium plasma ionization mass spectrometry (HePI-MS).