ACCESSION: MSBNK-NaToxAq-NA003348
RECORD_TITLE: Isophorone; LC-ESI-ITFT; MS2; CE: 80%; R=15000; [M+H]+
DATE: 2020.02.22
AUTHORS: Tobias Schulze, Martin Krauss, Helmholtz Centre for Environmental Research GmbH - UFZ, Leipzig, Germany
LICENSE: CC0
COPYRIGHT: Copyright (C) 2020 by Helmholtz Centre for Environmental Research GmbH - UFZ, Leipzig, Germany
COMMENT: CONFIDENCE Reference Standard (Level 1)
COMMENT: INTERNAL_ID 2336

CH$NAME: Isophorone
CH$NAME: 3,5,5-trimethylcyclohex-2-en-1-one
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C₉H₁₄O
CH$EXACT_MASS: 138.1045
CH$SMILES: CC1=CC(=O)CC(C)(C)C1
CH$IUPAC: InChI=1S/C9H14O/c1-7-4-8(10)6-9(2,3)5-7/h4H,5-6H2,1-3H3
CH$LINK: CAS 78-59-1
CH$LINK: CHEBI 34800
CH$LINK: KEGG C14743
CH$LINK: PUBCHEM CID:6544
CH$LINK: INCHIKEY HJOVHMDZYOCNQW-UHFFFAOYSA-N
CH$LINK: CHEMSPIDER 6296
CH$LINK: COMPTOX DTXSID8020759

AC$INSTRUMENT: LTQ Orbitrap XL Thermo Scientific
AC$INSTRUMENT_TYPE: LC-ESI-ITFT
AC$MASS_SPECTROMETRY: MS_TYPE MS2
AC$MASS_SPECTROMETRY: ION_MODE POSITIVE
AC$MASS_SPECTROMETRY: IONIZATION ESI
AC$MASS_SPECTROMETRY: FRAGMENTATION_MODE HCD
AC$MASS_SPECTROMETRY: COLLISION_ENERGY 80% (nominal)
AC$MASS_SPECTROMETRY: RESOLUTION 15000
AC$CHROMATOGRAPHY: COLUMN_NAME Kinetex Evo C18 2.6 um 50x2.1 mm, Phenomenex
AC$CHROMATOGRAPHY: FLOW_GRADIENT 95/5 at 0 min, 95/5 at 1 min, 0/100 at 13 min, 0/100 at 24 min, 95/5 at 24.3 min, 95/5/0 at 32 min
AC$CHROMATOGRAPHY: FLOW_RATE 300 uL/min
AC$CHROMATOGRAPHY: RETENTION_TIME 8.687 min
AC$CHROMATOGRAPHY: SOLVENT A water with 0.1% formic acid
AC$CHROMATOGRAPHY: SOLVENT B methanol with 0.1% formic acid

MS$FOCUSED_ION: BASE_PEAK 116.9858
MS$FOCUSED_ION: PRECURSOR_M/Z 139.1117
MS$FOCUSED_ION: PRECURSOR_TYPE [M+H]+
MS$DATA_PROCESSING: RECALIBRATE loess on assigned fragments and MS1
MS$DATA_PROCESSING: REANALYZE Peaks with additional N2/O included
MS$DATA_PROCESSING: WHOLE RMassBank 2.14.1

PK$SPLASH: splash10-014i-9200000000-3944f8155707ee56e9fb
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
  67.0543 C5H7+ 1 67.0542 1.19
  69.0335 C4H5O+ 1 69.0335 -0.25
  77.0385 C6H5+ 1 77.0386 -0.92
  79.0543 C6H7+ 1 79.0542 0.41
  81.0699 C6H9+ 1 81.0699 0.71
  83.0491 C5H7O+ 1 83.0491 0.07
  91.0543 C7H7+ 1 91.0542 0.28
  93.0699 C7H9+ 1 93.0699 0.08
  95.0856 C7H11+ 1 95.0855 1.17
  96.0574 C6H8O+ 1 96.057 4.26
  97.0648 C6H9O+ 1 97.0648 -0.02
  105.07 C8H9+ 1 105.0699 0.72
  121.1012 C9H13+ 1 121.1012 0.31
  139.1118 C9H15O+ 1 139.1117 0.34
PK$NUM_PEAK: 14
PK$PEAK: m/z int. rel.int.
  67.0543 1417 16
  69.0335 86583.6 999
  77.0385 2435.1 28
  79.0543 6463.2 74
  81.0699 1537.5 17
  83.0491 11547.1 133
  91.0543 2872.5 33
  93.0699 15066.6 173
  95.0856 4195.7 48
  96.0574 1345.4 15
  97.0648 20497.4 236
  105.07 8941.1 103
  121.1012 13258.4 152
  139.1118 26414.9 304
//