ACCESSION: MSBNK-UFZ-WANA031403B085PH
RECORD_TITLE: Prednisolone; LC-ESI-ITFT; MS2; CE: 20%; R=15000; [M+H]+
DATE: 2023.08.12
AUTHORS: Tobias Schulze, Martin Krauss, Department of Effect-Directed Analysis, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany
LICENSE: CC0
COPYRIGHT: Copyright (C) 2023
COMMENT: CONFIDENCE Reference Standard (Level 1)

CH$NAME: Prednisolone
CH$NAME: (8S,9S,10R,11S,13S,14S,17R)-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-one
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C₂₁H₂₈O₅
CH$EXACT_MASS: 360.193673996
CH$SMILES: C[C@]12C[C@H](O)[C@H]3[C@@H](CCC4=CC(=O)C=C[C@]34C)[C@@H]1CC[C@]2(O)C(=O)CO
CH$IUPAC: InChI=1S/C21H28O5/c1-19-7-5-13(23)9-12(19)3-4-14-15-6-8-21(26,17(25)11-22)20(15,2)10-16(24)18(14)19/h5,7,9,14-16,18,22,24,26H,3-4,6,8,10-11H2,1-2H3/t14-,15-,16-,18+,19-,20-,21-/m0/s1
CH$LINK: CAS 50-24-8
CH$LINK: CHEBI 8378
CH$LINK: KEGG D00472
CH$LINK: LIPIDMAPS LMST02030179
CH$LINK: PUBCHEM CID:5755
CH$LINK: INCHIKEY OIGNJSKKLXVSLS-VWUMJDOOSA-N
CH$LINK: CHEMSPIDER 5552
CH$LINK: COMPTOX DTXSID9021184

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$MASS_SPECTROMETRY: COLLISION_ENERGY 20 % (nominal)
AC$MASS_SPECTROMETRY: RESOLUTION 15000
AC$MASS_SPECTROMETRY: MASS_RANGE_M/Z 50-375
AC$CHROMATOGRAPHY: COLUMN_NAME Kinetex Evo C18 2.6 um 50 x 2.1 mm
AC$CHROMATOGRAPHY: FLOW_GRADIENT 95/5 at 0 min, 95/5 at 1 min, 0/100 at 13 min, 0/100 at 24 min, 95/5 at 24.3 min, 95/5 at 32 min
AC$CHROMATOGRAPHY: FLOW_RATE 300 uL/min
AC$CHROMATOGRAPHY: RETENTION_TIME 9.807 min

MS$FOCUSED_ION: BASE_PEAK 361.2009
MS$FOCUSED_ION: PRECURSOR_M/Z 361.201
MS$FOCUSED_ION: PRECURSOR_TYPE [M+H]+
MS$FOCUSED_ION: PRECURSOR_INTENSITY 7776188
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 3.11.2

PK$SPLASH: splash10-06tg-0209000000-7a54a812d385b089c8fb
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
  147.0805 C10H11O+ 1 147.0804 0.12
  279.174 C20H23O+ 1 279.1743 -1.26
  307.1692 C21H23O2+ 1 307.1693 -0.14
  325.1797 C21H25O3+ 1 325.1798 -0.36
  343.19 C21H27O4+ 1 343.1904 -1.24
  361.2003 C21H29O5+ 1 361.201 -1.94
PK$NUM_PEAK: 6
PK$PEAK: m/z int. rel.int.
  147.0805 2991.4 717
  279.174 1085.5 260
  307.1692 2566.7 616
  325.1797 2156.6 517
  343.19 4162.4 999
  361.2003 3569.6 856
//