ACCESSION: MSBNK-Eawag-EA278314
RECORD_TITLE: Prednisolone; LC-ESI-ITFT; MS2; CE: 35%; R=30000; [M+H]+
DATE: 2014.01.14
AUTHORS: Stravs M, Schymanski E, Singer H, Department of Environmental Chemistry, Eawag
LICENSE: CC BY
COPYRIGHT: Copyright (C) 2012 Eawag, Duebendorf, Switzerland
COMMENT: CONFIDENCE standard compound
COMMENT: EAWAG_UCHEM_ID 2783

CH$NAME: Prednisolone
CH$NAME: 1-Dehydrohydrocortisone
CH$NAME: (8S,9S,10R,11S,13S,14S,17R)-10,13-dimethyl-11,17-bis(oxidanyl)-17-(2-oxidanylethanoyl)-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-one
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C₂₁H₂₈O₅
CH$EXACT_MASS: 360.1937
CH$SMILES: C1[C@H]2[C@H]3[C@@H]([C@@]4(C(=CC(=O)C=C4)CC3)C)[C@@H](O)C[C@@]2([C@](C(CO)=O)(O)C1)C
CH$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$LINK: KEGG C07369
CH$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 CID
AC$MASS_SPECTROMETRY: COLLISION_ENERGY 35 % (nominal)
AC$MASS_SPECTROMETRY: RESOLUTION 30000
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 8.0 min
AC$CHROMATOGRAPHY: SOLVENT A water with 0.1% formic acid
AC$CHROMATOGRAPHY: SOLVENT B methanol with 0.1% formic acid

MS$FOCUSED_ION: BASE_PEAK 361.202
MS$FOCUSED_ION: PRECURSOR_M/Z 361.201
MS$FOCUSED_ION: PRECURSOR_TYPE [M+H]+
MS$DATA_PROCESSING: DEPROFILE Spline
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 1.3.1

PK$SPLASH: splash10-002f-0009000000-0af4f657def15fe9274e
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
  279.1741 C20H23O+ 1 279.1743 -0.69
  307.1689 C21H23O2+ 1 307.1693 -1.26
  325.1795 C21H25O3+ 1 325.1798 -1.08
  343.1901 C21H27O4+ 1 343.1904 -0.89
PK$NUM_PEAK: 4
PK$PEAK: m/z int. rel.int.
  279.1741 3618.2 126
  307.1689 9684.4 339
  325.1795 12142.9 425
  343.1901 28535.6 999
//