ACCESSION: MSBNK-UFZ-WANA126811C9CFPH
RECORD_TITLE: Isophorone; LC-ESI-ITFT; MS2; CE: 40%; R=15000; [M+H]+
DATE: 2023.08.12
AUTHORS: Tobias Schulze, Martin Krauss, Department of Effect-Directed Analysis, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany
LICENSE: CC0
COPYRIGHT: Copyright (C) 2023
COMMENT: CONFIDENCE Reference Standard (Level 1)

CH$NAME: Isophorone
CH$NAME: 3,5,5-trimethylcyclohex-2-en-1-one
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C₉H₁₄O
CH$EXACT_MASS: 138.104465068
CH$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$MASS_SPECTROMETRY: COLLISION_ENERGY 40 % (nominal)
AC$MASS_SPECTROMETRY: RESOLUTION 15000
AC$MASS_SPECTROMETRY: MASS_RANGE_M/Z 50-150
AC$CHROMATOGRAPHY: COLUMN_NAME Kinetex Evo C18 2.6 um 50 x 2.1 mm
AC$CHROMATOGRAPHY: FLOW_GRADIENT 95/5 at 0 min, 95/5 at 1 min, 0/100 at 13 min, 0/100 at 24 min, 95/5 at 24.3 min, 95/5 at 32 min
AC$CHROMATOGRAPHY: FLOW_RATE 300 uL/min
AC$CHROMATOGRAPHY: RETENTION_TIME 8.532 min

MS$FOCUSED_ION: BASE_PEAK 139.1118
MS$FOCUSED_ION: PRECURSOR_M/Z 139.1117
MS$FOCUSED_ION: PRECURSOR_TYPE [M+H]+
MS$FOCUSED_ION: PRECURSOR_INTENSITY 25727030
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 3.11.2

PK$SPLASH: splash10-000i-1900000000-8d7f46b4e8b80ec5efbc
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
  69.0332 C4H5O+ 1 69.0335 -4.6
  79.0541 C6H7+ 1 79.0542 -2.05
  81.0697 C6H9+ 1 81.0699 -2.24
  83.0489 C5H7O+ 1 83.0491 -2.88
  93.0697 C7H9+ 1 93.0699 -2.2
  95.0854 C7H11+ 1 95.0855 -1.78
  97.0646 C6H9O+ 1 97.0648 -2.39
  97.1008 C7H13+ 1 97.1012 -3.66
  111.08 C7H11O+ 1 111.0804 -3.64
  121.1009 C9H13+ 1 121.1012 -2.34
  139.1114 C9H15O+ 1 139.1117 -2.46
PK$NUM_PEAK: 11
PK$PEAK: m/z int. rel.int.
  69.0332 1130596.4 162
  79.0541 10409.3 1
  81.0697 15610.8 2
  83.0489 105790.3 15
  93.0697 41867.4 6
  95.0854 57357.7 8
  97.0646 117542.2 16
  97.1008 7710.6 1
  111.08 7185.2 1
  121.1009 207243.6 29
  139.1114 6932405.5 999
//