ACCESSION: MSBNK-UFZ-UF408902
RECORD_TITLE: Caffeine; LC-ESI-ITFT; MS2; CE: 80; R=15000; [M+H]+
DATE: 2017.01.05
AUTHORS: Schulze T, Krauss M, Department of Effect-Directed Analysis, Helmholtz Centre for Environmental Research - UFZ GmbH, Leipzig, Germany
LICENSE: CC BY
COPYRIGHT: Copyright (C) 2017
COMMENT: CONFIDENCE standard compound
COMMENT: INTERNAL_ID 4089

CH$NAME: Caffeine
CH$NAME: 1,3,7-Trimethylpurine-2,6-dione
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C₈H₁₀N₄O₂
CH$EXACT_MASS: 194.0804
CH$SMILES: CN1C=NC2=C1C(=O)N(C)C(=O)N2C
CH$IUPAC: InChI=1S/C8H10N4O2/c1-10-4-9-6-5(10)7(13)12(3)8(14)11(6)2/h4H,1-3H3
CH$LINK: CAS 58-08-2
CH$LINK: CHEBI 27732
CH$LINK: KEGG D00528
CH$LINK: PUBCHEM CID:2519
CH$LINK: INCHIKEY RYYVLZVUVIJVGH-UHFFFAOYSA-N
CH$LINK: CHEMSPIDER 2424
CH$LINK: COMPTOX DTXSID0020232

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$MASS_SPECTROMETRY: COLLISION_ENERGY 80 (nominal)
AC$MASS_SPECTROMETRY: RESOLUTION 15000
AC$CHROMATOGRAPHY: COLUMN_NAME Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex
AC$CHROMATOGRAPHY: FLOW_GRADIENT 90/10 at 0 min, 80/20 at 3.2 min, 5/95 at 17.8 min, 5/95 at 37.8 min, 90/10 at 37.9 min, 90/10 at 47 min
AC$CHROMATOGRAPHY: FLOW_RATE 200 uL/min
AC$CHROMATOGRAPHY: RETENTION_TIME 15.780 min
AC$CHROMATOGRAPHY: SOLVENT A water with 0.1% formic acid
AC$CHROMATOGRAPHY: SOLVENT B methanol with 0.1% formic acid

MS$FOCUSED_ION: BASE_PEAK 163.1329
MS$FOCUSED_ION: PRECURSOR_M/Z 195.0877
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 2.2.1

PK$SPLASH: splash10-000i-0900000000-d625aea76a3256436c31
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
  83.0605 C4H7N2+ 1 83.0604 0.92
  109.0397 C5H5N2O+ 1 109.0396 0.81
  110.0713 C5H8N3+ 1 110.0713 0.52
  111.0554 C5H7N2O+ 1 111.0553 0.68
  123.0429 C5H5N3O+ 1 123.0427 1.27
  138.0663 C6H8N3O+ 1 138.0662 1.13
  163.0622 C7H7N4O+ 1 163.0614 4.4
  195.0879 C8H11N4O2+ 1 195.0877 1.08
PK$NUM_PEAK: 8
PK$PEAK: m/z int. rel.int.
  83.0605 48051.2 146
  109.0397 18420.2 56
  110.0713 96068.8 292
  111.0554 6008.4 18
  123.0429 41203.5 125
  138.0663 327854.8 999
  163.0622 1467 4
  195.0879 23388.8 71
//