ACCESSION: MSBNK-Eawag-EQ366601
RECORD_TITLE: Difloxacin; LC-ESI-QFT; MS2; CE: 15; R=35000; [M+H]+
DATE: 2015.08.25
AUTHORS: Stravs M, Schymanski E, Singer H, Department of Environmental Chemistry, Eawag and Thomaidis N, University of Athens
LICENSE: CC BY
COPYRIGHT: Copyright (C) 2015 Eawag, Duebendorf, Switzerland
COMMENT: CONFIDENCE standard compound
COMMENT: EAWAG_UCHEM_ID 3666

CH$NAME: Difloxacin
CH$NAME: 6-fluoro-1-(4-fluorophenyl)-7-(4-methylpiperazin-1-yl)-4-oxoquinoline-3-carboxylic acid
CH$NAME: 6-fluoro-1-(4-fluorophenyl)-7-(4-methylpiperazin-4-ium-1-yl)-4-oxoquinoline-3-carboxylate
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C₂₁H₁₉F₂N₃O₃
CH$EXACT_MASS: 399.1394479
CH$SMILES: CN1CCN(CC1)C2=C(C=C3C(=C2)N(C=C(C3=O)C(=O)O)C4=CC=C(C=C4)F)F
CH$IUPAC: InChI=1S/C21H19F2N3O3/c1-24-6-8-25(9-7-24)19-11-18-15(10-17(19)23)20(27)16(21(28)29)12-26(18)14-4-2-13(22)3-5-14/h2-5,10-12H,6-9H2,1H3,(H,28,29)
CH$LINK: CAS 98106-17-3
CH$LINK: CHEBI 4537
CH$LINK: CHEMSPIDER 50725
CH$LINK: COMPTOX DTXSID5048348
CH$LINK: INCHIKEY NOCJXYPHIIZEHN-UHFFFAOYSA-N
CH$LINK: KEGG C11234
CH$LINK: PUBCHEM CID:56206

AC$INSTRUMENT: Q Exactive Plus Orbitrap Thermo Scientific
AC$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$MASS_SPECTROMETRY: COLLISION_ENERGY 15 (nominal)
AC$MASS_SPECTROMETRY: RESOLUTION 35000
AC$CHROMATOGRAPHY: COLUMN_NAME XBridge C18 3.5um, 2.1x50mm, Waters
AC$CHROMATOGRAPHY: FLOW_GRADIENT 90/10 at 0 min, 50/50 at 4 min, 5/95 at 17 min, 5/95 at 25 min, 90/10 at 25.1 min, 90/10 at 30 min
AC$CHROMATOGRAPHY: FLOW_RATE 200 ul/min
AC$CHROMATOGRAPHY: RETENTION_TIME 4.5 min
AC$CHROMATOGRAPHY: SOLVENT A water with 0.1% formic acid
AC$CHROMATOGRAPHY: SOLVENT B methanol with 0.1% formic acid

MS$FOCUSED_ION: BASE_PEAK 400.1461
MS$FOCUSED_ION: PRECURSOR_M/Z 400.1467
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 1.9.6

PK$SPLASH: splash10-0udi-0000900000-45746cb99dbc2c1e8a5a
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
  356.157 C20H20F2N3O+ 1 356.1569 0.35
  382.1359 C21H18F2N3O2+ 1 382.1362 -0.81
  400.1467 C21H20F2N3O3+ 1 400.1467 -0.09
PK$NUM_PEAK: 3
PK$PEAK: m/z int. rel.int.
  356.157 8662567 47
  382.1359 5456845 29
  400.1467 181831408 999
//