ACCESSION: MSBNK-HBM4EU-HB003405
RECORD_TITLE: Questin; LC-ESI-ITFT; MS2; CE: 40%; R=7500; [M-H]-
DATE: 2021.10.11
AUTHORS: Laurent Debrauwer, Emilien L. Jamin, Research Centre in Food Toxicology (TOXALIM), INRAE, MetaboHUB-Metatoul platform, Toulouse, France
LICENSE: CC0
COPYRIGHT: Copyright (c) 2021 by Research Centre in Food Toxicology (TOXALIM), INRAE, MetaboHUB-Metatoul platform, Toulouse, France
COMMENT: HBM4EU - science and policy for a healthy future (https://www.hbm4eu.eu)
COMMENT: CONFIDENCE Reference Standard (Level 1)
COMMENT: INTERNAL_ID 119

CH$NAME: Questin
CH$NAME: 1,6-dihydroxy-8-methoxy-3-methylanthracene-9,10-dione
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C₁₆H₁₂O₅
CH$EXACT_MASS: 284.06847
CH$SMILES: CC1=CC2=C(C(=C1)O)C(=O)C3=C(C2=O)C=C(C=C3OC)O
CH$IUPAC: InChI=1S/C16H12O5/c1-7-3-9-13(11(18)4-7)16(20)14-10(15(9)19)5-8(17)6-12(14)21-2/h3-6,17-18H,1-2H3
CH$LINK: CAS 3774-64-9
CH$LINK: CHEBI 16200
CH$LINK: KEGG C01448
CH$LINK: PUBCHEM CID:160717
CH$LINK: INCHIKEY UUNPIWCQMVNINR-UHFFFAOYSA-N
CH$LINK: CHEMSPIDER 141217
CH$LINK: COMPTOX DTXSID30191177

AC$INSTRUMENT: LTQ Orbitrap XL Thermo Scientific
AC$INSTRUMENT_TYPE: LC-ESI-ITFT
AC$MASS_SPECTROMETRY: MS_TYPE MS2
AC$MASS_SPECTROMETRY: ION_MODE NEGATIVE
AC$MASS_SPECTROMETRY: IONIZATION ESI
AC$MASS_SPECTROMETRY: FRAGMENTATION_MODE HCD
AC$MASS_SPECTROMETRY: COLLISION_ENERGY 40 % (nominal)
AC$MASS_SPECTROMETRY: RESOLUTION 7500
AC$CHROMATOGRAPHY: COLUMN_NAME Hypersil GOLD C18 1.9 um 100 x 2.1 mm Thermo Fisher Scientific
AC$CHROMATOGRAPHY: FLOW_GRADIENT 100/0 at 0 min, 0/100 at 30 min, 0/100 at 35 min
AC$CHROMATOGRAPHY: FLOW_RATE 300 uL/min
AC$CHROMATOGRAPHY: RETENTION_TIME 21.639 min
AC$CHROMATOGRAPHY: SOLVENT A water with 5% methanol and 0.1% acetic acid
AC$CHROMATOGRAPHY: SOLVENT B methanol with 0.1% acetic acid

MS$FOCUSED_ION: BASE_PEAK 283.06
MS$FOCUSED_ION: PRECURSOR_M/Z 283.0612
MS$FOCUSED_ION: PRECURSOR_TYPE [M-H]-
MS$FOCUSED_ION: PRECURSOR_INTENSITY 5686701.725586
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 3.2.0

PK$SPLASH: splash10-0006-0090000000-c1cd39d7a54a4b10b25a
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
240.042 C14H8O4- 1 240.0428 -3.53
PK$NUM_PEAK: 1
PK$PEAK: m/z int. rel.int.
240.042 4402.5 999
//