ACCESSION: MSBNK-HBM4EU-HB001043
RECORD_TITLE: Etofylline; LC-ESI-ITFT; MS2; CE: 140%; 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$MASS_SPECTROMETRY: COLLISION_ENERGY 140% (nominal)
AC$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 2.679 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$SPLASH: splash10-014i-9200000000-1b22892be238d9c04678
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
  67.0289 C3H3N2+ 1 67.0291 -2.37
  68.0368 C3H4N2+ 1 68.0369 -0.87
  69.0446 C3H5N2+ 1 69.0447 -2.4
  81.0446 C4H5N2+ 1 81.0447 -1.29
  83.0238 C3H3N2O+ 1 83.024 -2.21
  94.04 C4H4N3+ 1 94.04 0.54
  95.0242 C4H3N2O+ 1 95.024 2.37
  96.0556 C4H6N3+ 1 96.0556 -0.18
  97.0396 C4H5N2O+ 1 97.0396 -0.83
  109.0271 C4H3N3O+ 1 109.0271 -0.09
  124.0505 C5H6N3O+ 1 124.0505 -0.27
PK$NUM_PEAK: 11
PK$PEAK: m/z int. rel.int.
  67.0289 3223.2 34
  68.0368 2131.2 22
  69.0446 93250.7 999
  81.0446 2579.4 27
  83.0238 2215.2 23
  94.04 2919.6 31
  95.0242 1436 15
  96.0556 22333.7 239
  97.0396 1654.3 17
  109.0271 16619.2 178
  124.0505 23229.9 248
//