ACCESSION: MSBNK-UFZ-WANA222605070APH
RECORD_TITLE: 6alpha Methylprednisolone; LC-ESI-ITFT; MS2; CE: 30%; 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$NAME: 6alpha Methylprednisolone
CH$NAME: Methylprednisolone
CH$NAME: (6S,8S,9S,10R,11S,13S,14S,17R)-11,17-dihydroxy-17-(2-hydroxyacetyl)-6,10,13-trimethyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-one
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C₂₂H₃₀O₅
CH$EXACT_MASS: 374.20932406
CH$SMILES: [H][C@@]12CC[C@](O)(C(=O)CO)[C@@]1(C)C[C@H](O)[C@@]1([H])[C@@]2([H])C[C@H](C)C2=CC(=O)C=C[C@]12C
CH$IUPAC: InChI=1S/C22H30O5/c1-12-8-14-15-5-7-22(27,18(26)11-23)21(15,3)10-17(25)19(14)20(2)6-4-13(24)9-16(12)20/h4,6,9,12,14-15,17,19,23,25,27H,5,7-8,10-11H2,1-3H3/t12-,14-,15-,17-,19+,20-,21-,22-/m0/s1
CH$LINK: CAS 83-43-2
CH$LINK: CHEBI 6888
CH$LINK: KEGG D00407
CH$LINK: LIPIDMAPS LMST02030178
CH$LINK: PUBCHEM CID:6741
CH$LINK: INCHIKEY VHRSUDSXCMQTMA-PJHHCJLFSA-N
CH$LINK: CHEMSPIDER 6485
CH$LINK: COMPTOX DTXSID7023300

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$MASS_SPECTROMETRY: COLLISION_ENERGY 30 % (nominal)
AC$MASS_SPECTROMETRY: RESOLUTION 15000
AC$MASS_SPECTROMETRY: MASS_RANGE_M/Z 50-390
AC$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 10.492 min

MS$FOCUSED_ION: BASE_PEAK 375.2162
MS$FOCUSED_ION: PRECURSOR_M/Z 375.2166
MS$FOCUSED_ION: PRECURSOR_TYPE [M+H]+
MS$FOCUSED_ION: PRECURSOR_INTENSITY 10502042
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$SPLASH: splash10-0ik9-0953000000-9a9cedfe29c21f05ac0d
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
  161.0962 C11H13O+ 1 161.0961 0.79
  253.1581 C18H21O+ 1 253.1587 -2.2
  339.1955 C22H27O3+ 1 339.1955 0.13
PK$NUM_PEAK: 3
PK$PEAK: m/z int. rel.int.
  161.0962 3190.3 999
  253.1581 1975.9 618
  339.1955 1259.6 394
//