ACCESSION: MSBNK-LCSB-LU111801
RECORD_TITLE: Theophylline; LC-ESI-QFT; MS2; CE: 15; R=17500; [M+H]+
DATE: 2020.08.19
AUTHORS: Elapavalore, A.; Kondić, T.; Singh, R.; Schymanski, E.
LICENSE: CC BY
COPYRIGHT: Copyright © 2019 by Environmental Cheminformatics, LCSB, University of Luxembourg, Luxembourg
PUBLICATION: Elapavalore, A.; Kondić, T.; et al., Adding Open Spectral Data to MassBank and PubChem Using Open Source Tools to Support Non-Targeted Exposomics of Mixtures (submitted).
PROJECT: ENTACT U.S. Environmental Protection Agency’s Non-Targeted Analysis Collaborative Trial
COMMENT: CONFIDENCE standard compound
COMMENT: INTERNAL_ID 1118
COMMENT: DATASET 20200303_ENTACT_RP_MIX499
COMMENT: DATA_PROCESSING MERGING RMBmix ver. 0.2.7
COMMENT: DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0
COMMENT: ORIGINAL_ACQUISITION_NO 5282
COMMENT: ORIGINAL_PRECURSOR_SCAN_NO 5279
COMMENT: RAW_DATA available as MSV000091754 at [DOI:10.25345/C5S46HG75]

CH$NAME: Theophylline
CH$NAME: 1,3-dimethyl-7H-purine-2,6-dione
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C₇H₈N₄O₂
CH$EXACT_MASS: 180.0647
CH$SMILES: CN1C2=C(NC=N2)C(=O)N(C)C1=O
CH$IUPAC: InChI=1S/C7H8N4O2/c1-10-5-4(8-3-9-5)6(12)11(2)7(10)13/h3H,1-2H3,(H,8,9)
CH$LINK: CAS 58-55-9
CH$LINK: CHEBI 28177
CH$LINK: KEGG C07130
CH$LINK: PUBCHEM CID:2153
CH$LINK: INCHIKEY ZFXYFBGIUFBOJW-UHFFFAOYSA-N
CH$LINK: CHEMSPIDER 2068

AC$INSTRUMENT: Q Exactive Orbitrap (Thermo Scientific)
AC$INSTRUMENT_TYPE: LC-ESI-QFT
AC$MASS_SPECTROMETRY: MS_TYPE MS2
AC$MASS_SPECTROMETRY: ION_MODE POSITIVE
AC$MASS_SPECTROMETRY: IONIZATION ESI
AC$MASS_SPECTROMETRY: FRAGMENTATION_MODE HCD
AC$MASS_SPECTROMETRY: COLLISION_ENERGY 15
AC$MASS_SPECTROMETRY: RESOLUTION 17500
AC$CHROMATOGRAPHY: COLUMN_NAME Acquity BEH C18 1.7um, 2.1x150mm (Waters)
AC$CHROMATOGRAPHY: FLOW_GRADIENT 90/10 at 0-2 min, 0/100 at 15-20 min, 90/10 at 20.1-30 min
AC$CHROMATOGRAPHY: FLOW_RATE 0.20 mL/min
AC$CHROMATOGRAPHY: RETENTION_TIME 10.150 min
AC$CHROMATOGRAPHY: SOLVENT A 0.1% formic acid
AC$CHROMATOGRAPHY: SOLVENT B methanol

MS$FOCUSED_ION: BASE_PEAK 79.0211
MS$FOCUSED_ION: PRECURSOR_M/Z 181.072
MS$FOCUSED_ION: PRECURSOR_TYPE [M+H]+
MS$FOCUSED_ION: PRECURSOR_INTENSITY 1756870.46875
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 2.99.2

PK$SPLASH: splash10-001i-0900000000-131a03d40e3309f42372
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
  96.0557 C4H6N3+ 2 96.0556 0.69
  124.0506 C5H6N3O+ 2 124.0505 0.68
  137.0821 C6H9N4+ 1 137.0822 -0.35
  142.0612 C5H8N3O2+ 1 142.0611 0.42
  149.0234 C6H3N3O2+ 1 149.022 9.54
  163.039 C7H5N3O2+ 1 163.0376 8.27
  163.0606 C7H7N4O+ 1 163.0614 -5.15
  167.0559 C6H7N4O2+ 1 167.0564 -2.99
  181.072 C7H9N4O2+ 1 181.072 0.26
PK$NUM_PEAK: 9
PK$PEAK: m/z int. rel.int.
  96.0557 1950 1
  124.0506 145021.9 77
  137.0821 7852.7 4
  142.0612 8427.5 4
  149.0234 82493.7 43
  163.039 35540.3 18
  163.0606 2083.9 1
  167.0559 2104.9 1
  181.072 1875550.8 999
//