ACCESSION: MSBNK-BAFG-CSL2311092628
RECORD_TITLE: 3,7-Dimethylxanthine; LC-ESI-QTOF; MS2; 40 V
DATE: 2023.11.09
AUTHORS: Kevin S. Jewell; Björn Ehlig; Arne Wick
LICENSE: dl-de/by-2-0
COPYRIGHT: Copyright 2023 Federal Institute of Hydrology, Koblenz, Germany
COMMENT: CONFIDENCE Reference Standard (Level 1)
COMMENT: Chromatography method: dx.doi.org/10.1016/j.chroma.2015.11.014
COMMENT: Acquisition method: 10.1002/rcm.8541

CH$NAME: 3,7-Dimethylxanthine
CH$COMPOUND_CLASS: Pharmaceutical; Natural_product
CH$FORMULA: C₇H₈N₄O₂
CH$EXACT_MASS: 180.0647
CH$SMILES: Cn1cnc2N(C)C(=O)NC(=O)c12
CH$IUPAC: InChI=1S/C7H8N4O2/c1-10-3-8-5-4(10)6(12)9-7(13)11(5)2/h3H,1-2H3,(H,9,12,13)
CH$LINK: CAS 83-67-0
CH$LINK: INCHIKEY YAPQBXQYLJRXSA-UHFFFAOYSA-N

AC$INSTRUMENT: TripleTOF 5600 SCIEX
AC$INSTRUMENT_TYPE: LC-ESI-QTOF
AC$MASS_SPECTROMETRY: MS_TYPE MS2
AC$MASS_SPECTROMETRY: ION_MODE NEGATIVE
AC$MASS_SPECTROMETRY: COLLISION_ENERGY 40
AC$MASS_SPECTROMETRY: FRAGMENTATION_MODE CID
AC$MASS_SPECTROMETRY: IONIZATION ESI
AC$CHROMATOGRAPHY: COLUMN_NAME Zorbax Eclipse Plus C18 2.1 mm x 150 mm, 3.5 um, Agilent
AC$CHROMATOGRAPHY: COLUMN_TEMPERATURE 40 °C
AC$CHROMATOGRAPHY: FLOW_GRADIENT 0 min min 98% A, 1 min 98% A, 2 min 80% A, 16.5 min 2% A, 22 min 2% A, 22.1 min 98% A, 27 min 98% A
AC$CHROMATOGRAPHY: FLOW_RATE 0.3 mL/min
AC$CHROMATOGRAPHY: RETENTION_TIME 5.242 min
AC$CHROMATOGRAPHY: SOLVENT A: Water 0.1% Formic acid, B: Acetonitrile 0.1% Formic acid

MS$FOCUSED_ION: PRECURSOR_M/Z 179.0574
MS$FOCUSED_ION: PRECURSOR_TYPE [M-H]-
MS$DATA_PROCESSING: COMMENT Export with Spectra 1.9.12 MsBackendMassbank 1.7.4
MS$DATA_PROCESSING: WHOLE RMassBank 2.3.1

PK$SPLASH: splash10-0077-9700000000-93a8fa14547526a06abe
PK$NUM_PEAK: 17
PK$PEAK: m/z int. rel.int.
  45.0003 6.4 999
  45.0216 0.5 78
  47.0111 1.7 265
  65.9991 2 312
  67.0298 0.6 93
  79.017 3.2 499
  90.997 6.3 983
  92.0245 0.6 93
  94.0401 2.4 374
  107.0128 2.9 452
  109.0258 0.5 78
  122.036 4.4 686
  134.9862 0.5 78
  135.0063 3.3 515
  135.0303 2.8 437
  136.0384 0.4 62
  164.0338 3.9 608
//