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MassBank Record: MSBNK-CASMI_2016-SM860053

Lorazepam; LC-ESI-QFT; MS2; CE: 35 NCE; R=35000; [M-H]-

Mass Spectrum
Chemical Structure
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ACCESSION: MSBNK-CASMI_2016-SM860053
RECORD_TITLE: Lorazepam; LC-ESI-QFT; MS2; CE: 35 NCE; R=35000; [M-H]-
DATE: 2016.12.12
AUTHORS: Krauss M, Schymanski EL, Weidauer C, Schupke H, UFZ and Eawag
LICENSE: CC BY
COPYRIGHT: Copyright (C) 2016 UFZ/Eawag
PUBLICATION: Schymanski, E. L.; Ruttkies, C.; Krauss, M.; Brouard, C.; Kind, T.; Dührkop, K.; Allen, F.; Vaniya, A.; Verdegem, D.; Böcker, S.; et al. Critical Assessment of Small Molecule Identification 2016: Automated Methods. Journal of Cheminformatics 2017, 9 (1). DOI:10.1186/s13321-017-0207-1
COMMENT: CONFIDENCE standard compound
COMMENT: INTERNAL_ID 8600

CH$NAME: Lorazepam
CH$NAME: 7-chloro-5-(2-chlorophenyl)-3-hydroxy-1,3-dihydro-1,4-benzodiazepin-2-one
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C15H10Cl2N2O2
CH$EXACT_MASS: 320.01193
CH$SMILES: OC1N=C(c2ccccc2Cl)c2cc(Cl)ccc2NC1=O
CH$IUPAC: InChI=1S/C15H10Cl2N2O2/c16-8-5-6-12-10(7-8)13(19-15(21)14(20)18-12)9-3-1-2-4-11(9)17/h1-7,15,21H,(H,18,20)
CH$LINK: CAS 846-49-1
CH$LINK: CHEBI 116959
CH$LINK: KEGG D00365
CH$LINK: PUBCHEM CID:3958
CH$LINK: INCHIKEY DIWRORZWFLOCLC-UHFFFAOYSA-N
CH$LINK: CHEMSPIDER 3821
CH$LINK: COMPTOX DTXSID7023225

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 NEGATIVE
AC$MASS_SPECTROMETRY: IONIZATION ESI
AC$MASS_SPECTROMETRY: FRAGMENTATION_MODE HCD
AC$MASS_SPECTROMETRY: COLLISION_ENERGY 35 (nominal)
AC$MASS_SPECTROMETRY: RESOLUTION 35000
AC$CHROMATOGRAPHY: COLUMN_NAME Kinetex C18 EVO 2.6 um, 2.1x50 mm, precolumn 2.1x5 mm, Phenomenex
AC$CHROMATOGRAPHY: FLOW_GRADIENT 95/5 at 0 min, 95/5 at 1 min, 0/100 at 13 min, 0/100 at 24 min
AC$CHROMATOGRAPHY: FLOW_RATE 300 uL/min
AC$CHROMATOGRAPHY: RETENTION_TIME 10.387 min
AC$CHROMATOGRAPHY: SOLVENT A water with 0.1% formic acid
AC$CHROMATOGRAPHY: SOLVENT B methanol with 0.1% formic acid

MS$FOCUSED_ION: BASE_PEAK 319.0046
MS$FOCUSED_ION: PRECURSOR_M/Z 319.0047
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 2.3.1

PK$SPLASH: splash10-001i-0091000000-abaf38ed3aa6e7d51245
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
  116.0131 C5N4- 1 116.0128 2.1
  151.9907 C7H3ClNO- 3 151.9909 -0.85
  179.9859 C8H3ClNO2- 2 179.9858 0.63
  255.0337 C14H8ClN2O- 1 255.0331 2.39
  283.0281 C15H8ClN2O2- 1 283.028 0.53
  319.0048 C15H9Cl2N2O2- 1 319.0047 0.5
PK$NUM_PEAK: 6
PK$PEAK: m/z int. rel.int.
  116.0131 4186.6 24
  151.9907 5220.8 30
  179.9859 2733.2 16
  255.0337 6259.5 36
  283.0281 170288 999
  319.0048 31944.8 187
//

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