ACCESSION: MSBNK-RIKEN-PR309356
RECORD_TITLE: 7,8-Dihydroxycoumarin; LC-ESI-QTOF; MS2
DATE: 2019.03.28
AUTHORS: Tetsuya Mori, Center for Sustainable Resource Science, RIKEN
LICENSE: CC BY-NC-SA
PUBLICATION: Tsugawa H., Nakabayashi R., Mori T., Yamada Y., Takahashi M., Rai A., Sugiyama R., Yamamoto H., Nakaya T., Yamazaki M., Kooke R., Bac-Molenaar JA., Oztolan-Erol N., Keurentjes JJB., Arita M., Saito K. (2019) "A cheminformatics approach to characterize metabolomes in stable-isotope-labeled organisms" Nature Methods 16(4):295-298. [doi:10.1038/s41592-019-0358-2]
COMMENT: Annotation level-1

CH$NAME: 7,8-Dihydroxycoumarin
CH$COMPOUND_CLASS: Coumarin and derivatives
CH$FORMULA: C₉H₆O₄
CH$EXACT_MASS: 178.143
CH$SMILES: O=C1OC=2C(O)=C(O)C=CC=2(C=C1)
CH$IUPAC: InChI=1S/C9H6O4/c10-6-3-1-5-2-4-7(11)13-9(5)8(6)12/h1-4,10,12H
CH$LINK: INCHIKEY ATEFPOUAMCWAQS-UHFFFAOYSA-N

AC$INSTRUMENT: LC, Waters Acquity UPLC System; MS, Waters Xevo G2 Q-Tof
AC$INSTRUMENT_TYPE: LC-ESI-QTOF
AC$MASS_SPECTROMETRY: MS_TYPE MS2
AC$MASS_SPECTROMETRY: ION_MODE NEGATIVE
AC$MASS_SPECTROMETRY: COLLISION_ENERGY 6V
AC$MASS_SPECTROMETRY: DESOLVATION_GAS_FLOW 800/h
AC$MASS_SPECTROMETRY: DESOLVATION_TEMPERATURE 450 C
AC$MASS_SPECTROMETRY: IONIZATION ESI
AC$CHROMATOGRAPHY: CAPILLARY_VOLTAGE +3.00 kV
AC$CHROMATOGRAPHY: COLUMN_NAME Acquity bridged ethyl hybrid C18 (1.7 um, 2.1 mm * 100 mm, Waters)
AC$CHROMATOGRAPHY: COLUMN_TEMPERATURE 40 C
AC$CHROMATOGRAPHY: FLOW_GRADIENT A/B = (99.5%/0.5% at 0 min, 99.5%/0.5% at 0.1 min, 20%/80% at 10 min, 0.5%/99.5% at 10.1 min, 0.5%/99.5% at 12.0 min, 99.5%/0.5% at 12.1 min, 99.5%/0.5% at 15.0 min)
AC$CHROMATOGRAPHY: FLOW_RATE 0.3 ml/min at 0 min, 0.3 ml/min at 10 min, 0.4 ml/min at 10.1 min, 0.4 ml/min at 14.4 min, 0.3 ml/min at 14.5 min
AC$CHROMATOGRAPHY: RETENTION_TIME 3.64
AC$CHROMATOGRAPHY: SOLVENT A water including 0.1% formic acid
AC$CHROMATOGRAPHY: SOLVENT B acetonitrile including 0.1% formic acid

MS$FOCUSED_ION: PRECURSOR_TYPE [M-H]-
MS$FOCUSED_ION: PRECURSOR_M/Z 177.01933

PK$SPLASH: splash10-004i-0900000000-8944c4f1a1b4673bdf16
PK$NUM_PEAK: 27
PK$PEAK: m/z int. rel.int.
  65.03535 27.0 8
  77.03479 20.0 6
  77.04063 96.0 30
  79.06448 21.0 7
  92.02426 25.0 8
  93.03179 48.0 15
  103.01611 36.0 11
  105.03233 471.0 147
  106.03259 18.0 6
  106.03767 33.0 10
  111.00735 25.0 8
  118.64996 32.0 10
  120.73219 39.0 12
  120.98405 20.0 6
  121.02874 583.0 182
  122.02875 18.0 6
  132.02036 149.0 47
  133.02852 350.0 109
  134.03024 37.0 12
  146.09666 21.0 7
  149.02571 272.0 85
  151.02954 20.0 6
  158.8226 23.0 7
  159.00838 28.0 9
  160.01834 31.0 10
  176.00461 63.0 20
  177.01791 3198.0 999
//