ACCESSION: MSBNK-LCSB-LU024952
RECORD_TITLE: 5,5-Dimethylbarbituric acid; LC-ESI-QFT; MS2; CE: 30; R=17500; [M-H]-
DATE: 2020.08.19
AUTHORS: Elapavalore, A.; Kondić, T.; Singh, R.; Schymanski, E.
LICENSE: CC BY
COPYRIGHT: Copyright © 2019 by Environmental Cheminformatics, LCSB, University of Luxembourg, Luxembourg
PUBLICATION: Elapavalore, A.; Kondić, T.; et al., Adding Open Spectral Data to MassBank and PubChem Using Open Source Tools to Support Non-Targeted Exposomics of Mixtures (submitted).
PROJECT: ENTACT U.S. Environmental Protection Agency’s Non-Targeted Analysis Collaborative Trial
COMMENT: CONFIDENCE standard compound
COMMENT: INTERNAL_ID 249
COMMENT: DATASET 20200303_ENTACT_RP_MIX505
COMMENT: DATA_PROCESSING MERGING RMBmix ver. 0.2.7
COMMENT: DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0
COMMENT: ORIGINAL_ACQUISITION_NO 4764
COMMENT: ORIGINAL_PRECURSOR_SCAN_NO 4763
COMMENT: RAW_DATA available as MSV000091754 at [DOI:10.25345/C5S46HG75]
CH$NAME: 5,5-Dimethylbarbituric acid
CH$NAME: 5,5-dimethyl-1,3-diazinane-2,4,6-trione
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C6H8N2O3
CH$EXACT_MASS: 156.0535
CH$SMILES: CC1(C)C(=O)NC(=O)NC1=O
CH$IUPAC: InChI=1S/C6H8N2O3/c1-6(2)3(9)7-5(11)8-4(6)10/h1-2H3,(H2,7,8,9,10,11)
CH$LINK: CAS
24448-94-0
CH$LINK: PUBCHEM
CID:90509
CH$LINK: INCHIKEY
LAOZSCRCYVBSJA-UHFFFAOYSA-N
CH$LINK: CHEMSPIDER
81718
AC$INSTRUMENT: Q Exactive 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 30
AC$MASS_SPECTROMETRY: RESOLUTION 17500
AC$CHROMATOGRAPHY: COLUMN_NAME Acquity BEH C18 1.7um, 2.1x150mm (Waters)
AC$CHROMATOGRAPHY: FLOW_GRADIENT 90/10 at 0-2 min, 0/100 at 15-20 min, 90/10 at 20.1-30 min
AC$CHROMATOGRAPHY: FLOW_RATE 0.20 mL/min
AC$CHROMATOGRAPHY: RETENTION_TIME 17.343 min
AC$CHROMATOGRAPHY: SOLVENT A 0.1% formic acid
AC$CHROMATOGRAPHY: SOLVENT B methanol
MS$FOCUSED_ION: BASE_PEAK 329.1063
MS$FOCUSED_ION: PRECURSOR_M/Z 155.0462
MS$FOCUSED_ION: PRECURSOR_TYPE [M-H]-
MS$FOCUSED_ION: PRECURSOR_INTENSITY 14742397.88672
MS$DATA_PROCESSING: RECALIBRATE loess on assigned fragments and MS1
MS$DATA_PROCESSING: REANALYZE Peaks with additional N2/O included
MS$DATA_PROCESSING: WHOLE RMassBank 2.99.2
PK$SPLASH: splash10-0a4i-6900000000-c2465ca6c7de57b18be2
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
54.0349 C3H4N- 1 54.0349 -1.12
64.0067 C3N2- 1 64.0067 -0.01
65.0145 C3HN2- 1 65.0145 0.35
65.9986 C3NO- 1 65.9985 0.2
75.0088 C2H3O3- 1 75.0088 0.08
77.0145 C4HN2- 1 77.0145 -0.49
79.0302 C4H3N2- 1 79.0302 0.31
87.0564 C3H7N2O- 1 87.0564 0.4
97.017 C4H3NO2- 1 97.0169 0.6
98.0248 C4H4NO2- 1 98.0248 0.43
109.0043 C4HN2O2- 1 109.0044 -0.62
110.0122 C4H2N2O2- 1 110.0122 0.39
123.02 C5H3N2O2- 1 123.02 0.13
125.0357 C5H5N2O2- 1 125.0357 0
140.0228 C5H4N2O3- 1 140.0227 0.19
141.0307 C5H5N2O3- 1 141.0306 1.07
155.0462 C6H7N2O3- 1 155.0462 0.12
PK$NUM_PEAK: 17
PK$PEAK: m/z int. rel.int.
54.0349 44459 12
64.0067 85759.1 24
65.0145 37606.4 10
65.9986 1632528.6 460
75.0088 5846.4 1
77.0145 4715.4 1
79.0302 1307374.9 369
87.0564 93952.3 26
97.017 93307.8 26
98.0248 47762.1 13
109.0043 30210.8 8
110.0122 24068.7 6
123.02 59953 16
125.0357 417394.3 117
140.0228 613669.4 173
141.0307 9508.6 2
155.0462 3538276 999
//
