MassBank Record: AU117902

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Rifaximin; LC-ESI-QTOF; MS2; CE: 20 eV; R=35000; [M+H]+
Mass Spectrum
Chemical Structure
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ACCESSION: AU117902
RECORD_TITLE: Rifaximin; LC-ESI-QTOF; MS2; CE: 20 eV; R=35000; [M+H]+
DATE: 2015.09.23
AUTHORS: Nikiforos Alygizakis, Anna Bletsou, Nikolaos Thomaidis, University of Athens
LICENSE: CC BY-SA
COPYRIGHT: Copyright (C) 2015 Department of Chemistry, University of Athens
COMMENT: CONFIDENCE standard compound
COMMENT: INTERNAL_ID 1179

CH$NAME: Rifaximin CH$COMPOUND_CLASS: N/A; Environmental Standard CH$FORMULA: C43H51N3O11 CH$EXACT_MASS: 785.3523595 CH$SMILES: C[C@H]1/C=C/C=C(\C(=O)NC2=C(C3=C(C4=C(C(=C3O)C)O[C@@](C4=O)(O/C=C/[C@@H]([C@H]([C@H]([C@@H]([C@@H]([C@@H]([C@H]1O)C)O)C)OC(=O)C)C)OC)C)C5=C2N6C=CC(=CC6=N5)C)O)/C CH$IUPAC: InChI=1S/C43H51N3O11/c1-19-14-16-46-28(18-19)44-32-29-30-37(50)25(7)40-31(29)41(52)43(9,57-40)55-17-15-27(54-10)22(4)39(56-26(8)47)24(6)36(49)23(5)35(48)20(2)12-11-13-21(3)42(53)45-33(34(32)46)38(30)51/h11-18,20,22-24,27,35-36,39,48-51H,1-10H3,(H,45,53)/b12-11+,17-15+,21-13-/t20-,22+,23+,24+,27-,35-,36+,39+,43-/m0/s1 CH$LINK: CAS 88747-56-2 CH$LINK: PUBCHEM CID:6436173 CH$LINK: INCHIKEY NZCRJKRKKOLAOJ-XRCRFVBUSA-N CH$LINK: CHEMSPIDER 10482302 CH$LINK: COMPTOX DTXSID7045998
AC$INSTRUMENT: Bruker maXis Impact AC$INSTRUMENT_TYPE: LC-ESI-QTOF AC$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 20 eV AC$MASS_SPECTROMETRY: RESOLUTION 35000 AC$CHROMATOGRAPHY: COLUMN_NAME Acclaim RSLC C18 2.2um, 2.1x100mm, Thermo AC$CHROMATOGRAPHY: FLOW_GRADIENT 99/1 at 0-1 min, 61/39 at 3 min, 0.1/99.9 at 14-16 min, 99/1 at 16.1-20 min AC$CHROMATOGRAPHY: FLOW_RATE 200 uL/min at 0-3 min, 400 uL/min at 14 min, 480 uL/min at 16-19 min, 200 uL/min at 19.1-20 min AC$CHROMATOGRAPHY: RETENTION_TIME 9.8 min AC$CHROMATOGRAPHY: SOLVENT A water with 0.01% formic acid and 5mM ammonium formate AC$CHROMATOGRAPHY: SOLVENT B 90:10 methanol:water with 0.01% formic acid and 5mM ammonium formate
MS$FOCUSED_ION: BASE_PEAK 786.339 MS$FOCUSED_ION: PRECURSOR_M/Z 786.3596 MS$FOCUSED_ION: PRECURSOR_TYPE [M+H]+ MS$DATA_PROCESSING: RECALIBRATE identity on assigned fragments and MS1 MS$DATA_PROCESSING: REANALYZE Peaks with additional N2/O included MS$DATA_PROCESSING: WHOLE RMassBank 2.0.2
PK$SPLASH: splash10-000i-0000000900-b5cd5135b5fe6b9d73a9 PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm) 754.3135 C42H46N2O11+ 4 754.3096 5.21 755.3186 C41[13]CH46N2O11+ 1 755.3135 6.75 756.3211 C42[13]CH49NO11+ 1 756.3339 -16.92 756.3325 C42[13]CH49NO11+ 1 756.3339 -1.9 786.3392 C43H52N3O11+ 1 786.3596 -25.98 787.3482 C42[13]CH52N3O11+ 1 787.3635 -19.43 PK$NUM_PEAK: 6 PK$PEAK: m/z int. rel.int. 754.3135 5956 192 755.3186 2088 67 756.3211 360 11 756.3325 588 18 786.3392 30920 999 787.3482 14888 481 //