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MassBank Record: MSBNK-Athens_Univ-AU107801

Dexamethasone; LC-ESI-QTOF; MS2; CE: 10 eV; R=35000; [M+H]+

Mass Spectrum
Chemical Structure
Generated by the Chemistry Development Kit (http://github.com/cdk)

ACCESSION: MSBNK-Athens_Univ-AU107801
RECORD_TITLE: Dexamethasone; LC-ESI-QTOF; MS2; CE: 10 eV; R=35000; [M+H]+
DATE: 2015.12.07
AUTHORS: Nikiforos Alygizakis, Nikolaos Thomaidis, University of Athens
LICENSE: CC BY-SA
COPYRIGHT: Copyright (C) 2015 Department of Chemistry, University of Athens
COMMENT: CONFIDENCE standard compound
COMMENT: INTERNAL_ID 1078

CH$NAME: Dexamethasone
CH$NAME: (8S,9R,10S,11S,13S,14S,16R,17R)-9-fluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-3-one
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C22H29FO5
CH$EXACT_MASS: 392.1999022
CH$SMILES: C[C@@H]1C[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@]4(C)[C@@]3(F)[C@@H](O)C[C@]2(C)[C@@]1(O)C(=O)CO
CH$IUPAC: InChI=1S/C22H29FO5/c1-12-8-16-15-5-4-13-9-14(25)6-7-19(13,2)21(15,23)17(26)10-20(16,3)22(12,28)18(27)11-24/h6-7,9,12,15-17,24,26,28H,4-5,8,10-11H2,1-3H3/t12-,15+,16+,17+,19+,20+,21+,22+/m1/s1
CH$LINK: CAS 50-02-2
CH$LINK: CHEBI 41879
CH$LINK: KEGG D00292
CH$LINK: PUBCHEM CID:5743
CH$LINK: INCHIKEY UREBDLICKHMUKA-CXSFZGCWSA-N
CH$LINK: CHEMSPIDER 5541
CH$LINK: COMPTOX DTXSID3020384

AC$INSTRUMENT: Bruker maXis Impact
AC$INSTRUMENT_TYPE: LC-ESI-QTOF
AC$MASS_SPECTROMETRY: MS_TYPE MS2
AC$MASS_SPECTROMETRY: ION_MODE POSITIVE
AC$MASS_SPECTROMETRY: IONIZATION ESI
AC$MASS_SPECTROMETRY: FRAGMENTATION_MODE CID
AC$MASS_SPECTROMETRY: COLLISION_ENERGY 10 eV
AC$MASS_SPECTROMETRY: RESOLUTION 35000
AC$CHROMATOGRAPHY: COLUMN_NAME Acclaim RSLC C18 2.2um, 2.1x100mm, Thermo
AC$CHROMATOGRAPHY: FLOW_GRADIENT 99/1 at 0-1 min, 61/39 at 3 min, 0.1/99.9 at 14-16 min, 99/1 at 16.1-20 min
AC$CHROMATOGRAPHY: FLOW_RATE 200 uL/min at 0-3 min, 400 uL/min at 14 min, 480 uL/min at 16-19 min, 200 uL/min at 19.1-20 min
AC$CHROMATOGRAPHY: RETENTION_TIME 8.3 min
AC$CHROMATOGRAPHY: SOLVENT A 90:10 water:methanol with 0.01% formic acid and 5mM ammonium formate
AC$CHROMATOGRAPHY: SOLVENT B methanol with 0.01% formic acid and 5mM ammonium formate

MS$FOCUSED_ION: BASE_PEAK 150.1113
MS$FOCUSED_ION: PRECURSOR_M/Z 393.2072
MS$FOCUSED_ION: PRECURSOR_TYPE [M+H]+
MS$DATA_PROCESSING: RECALIBRATE identity on assigned fragments and MS1
MS$DATA_PROCESSING: REANALYZE Peaks with additional N2/O included
MS$DATA_PROCESSING: WHOLE RMassBank 2.0.3

PK$SPLASH: splash10-006w-0719000000-d4feef3f83ca022aa94d
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
  149.0217 C8H5O3+ 2 149.0233 -10.75
  167.032 C8H7O4+ 3 167.0339 -10.99
  261.1429 C16H21O3+ 1 261.1485 -21.5
  279.1606 C13H24FO5+ 3 279.1602 1.44
  355.1902 C22H27O4+ 2 355.1904 -0.51
  373.2021 C22H29O5+ 1 373.201 3.14
  374.205 C22H30O5+ 1 374.2088 -10.16
  393.2083 C22H30FO5+ 1 393.2072 2.8
  394.2134 C20H30N2O6+ 1 394.2098 9.03
PK$NUM_PEAK: 9
PK$PEAK: m/z int. rel.int.
  149.0217 2128 999
  167.032 688 322
  261.1429 312 146
  279.1606 456 214
  355.1902 544 255
  373.2021 1036 486
  374.205 320 150
  393.2083 1136 533
  394.2134 456 214
//

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