ACCESSION: MSBNK-HBM4EU-HB001056
RECORD_TITLE: Etofylline; LC-ESI-ITFT; MS2; CE: 165%; R=15000; [M+H]+
DATE: 2018.09.08
AUTHORS: Tobias Schulze, Carolin Huber, Martin Krauss, Department of Effect-Directed Analysis, Helmholtz Centre for Environmental Research GmbH - UFZ, Leipzig, Germany
LICENSE: CC0
COPYRIGHT: Copyright (C) 2018
PUBLICATION: Oberacher H, Sasse M, Antignac J-P, Guitton Y, Debrauwer L, Jamin E L, Schulze T, Krauss M, Covaci A, Caballero-Casero N, Rosseau K, Damont A, Fenaille F, Lamoree M, Schymanski E, A European proposal for quality control and quality assurance of tandem mass spectral libraries, Environmental Sciences Europe, https://doi.org/10.1186/s12302-020-00314-9
COMMENT: CONFIDENCE Reference Standard (Level 1)
COMMENT: HBM4EU - science and policy for a healthy future (https://www.hbm4eu.eu)

CH$NAME: Etofylline
CH$NAME: 7-(2-hydroxyethyl)-1,3-dimethylpurine-2,6-dione
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C₉H₁₂N₄O₃
CH$EXACT_MASS: 224.0909
CH$SMILES: CN1C2=C(C(=O)N(C1=O)C)N(C=N2)CCO
CH$IUPAC: InChI=1S/C9H12N4O3/c1-11-7-6(8(15)12(2)9(11)16)13(3-4-14)5-10-7/h5,14H,3-4H2,1-2H3
CH$LINK: CAS 519-37-9
CH$LINK: CHEBI 94764
CH$LINK: KEGG D07933
CH$LINK: PUBCHEM CID:1892
CH$LINK: INCHIKEY NWPRCRWQMGIBOT-UHFFFAOYSA-N
CH$LINK: CHEMSPIDER 1820

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$MASS_SPECTROMETRY: COLLISION_ENERGY 165% (nominal)
AC$MASS_SPECTROMETRY: RESOLUTION 15000
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 2.596 min
AC$CHROMATOGRAPHY: SOLVENT A water with 0.1% formic acid
AC$CHROMATOGRAPHY: SOLVENT B methanol with 0.1% formic acid

MS$FOCUSED_ION: BASE_PEAK 300.1474
MS$FOCUSED_ION: PRECURSOR_M/Z 225.0982
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 2.9.1

PK$SPLASH: splash10-014i-9200000000-879d348b44cf1bffa0d6
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
  67.0289 C3H3N2+ 1 67.0291 -2.86
  68.0367 C3H4N2+ 1 68.0369 -2.72
  69.0445 C3H5N2+ 1 69.0447 -2.8
  81.0447 C4H5N2+ 1 81.0447 -0.13
  82.0161 C3H2N2O+ 1 82.0162 -1.01
  94.0399 C4H4N3+ 1 94.04 -1.23
  95.0239 C4H3N2O+ 1 95.024 -0.68
  96.0556 C4H6N3+ 1 96.0556 -0.5
  109.027 C4H3N3O+ 1 109.0271 -0.21
  121.0505 C5H5N4+ 1 121.0509 -3.26
  124.0505 C5H6N3O+ 1 124.0505 -0.36
PK$NUM_PEAK: 11
PK$PEAK: m/z int. rel.int.
  67.0289 9192.5 103
  68.0367 4103.2 46
  69.0445 88945.5 999
  81.0447 2841.4 31
  82.0161 3131.8 35
  94.0399 4157 46
  95.0239 2484.5 27
  96.0556 9223.4 103
  109.027 22500.4 252
  121.0505 1196.9 13
  124.0505 4313.2 48
//