ACCESSION: MSBNK-Athens_Univ-AU273004
RECORD_TITLE: Methotrexate; LC-ESI-QTOF; MS2; CE: 40 eV; R=35000; [M+H]+
DATE: 2019.05.30
AUTHORS: Nikiforos Alygizakis, Katerina Galani, Nikolaos Thomaidis, University of Athens
LICENSE: CC BY
COPYRIGHT: Copyright (C) 2019 Department of Chemistry, University of Athens
COMMENT: CONFIDENCE standard compound
COMMENT: INTERNAL_ID 2730
CH$NAME: Methotrexate
CH$NAME: (2S)-2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]pentanedioic acid
CH$COMPOUND_CLASS: N/A; Environmental Standard
CH$FORMULA: C20H22N8O5
CH$EXACT_MASS: 454.1713158
CH$SMILES: CN(CC1=NC2=C(N=C1)N=C(N)N=C2N)C1=CC=C(C=C1)C(=O)N[C@@H](CCC(O)=O)C(O)=O
CH$IUPAC: InChI=1S/C20H22N8O5/c1-28(9-11-8-23-17-15(24-11)16(21)26-20(22)27-17)12-4-2-10(3-5-12)18(31)25-13(19(32)33)6-7-14(29)30/h2-5,8,13H,6-7,9H2,1H3,(H,25,31)(H,29,30)(H,32,33)(H4,21,22,23,26,27)/t13-/m0/s1
CH$LINK: CAS
59-05-2
CH$LINK: CHEBI
44185
CH$LINK: KEGG
C01937
CH$LINK: PUBCHEM
CID:126941
CH$LINK: INCHIKEY
FBOZXECLQNJBKD-ZDUSSCGKSA-N
CH$LINK: CHEMSPIDER
112728
CH$LINK: COMPTOX
DTXSID4020822
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$MASS_SPECTROMETRY: COLLISION_ENERGY 40 eV
AC$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 3.962 min
AC$CHROMATOGRAPHY: SOLVENT A 90:10 water:methanol with 0.01% formic acid and 5mM ammonium formate
AC$CHROMATOGRAPHY: SOLVENT B methanol with 0.01% formic acid and 5mM ammonium formate
MS$FOCUSED_ION: BASE_PEAK 407.2202
MS$FOCUSED_ION: PRECURSOR_M/Z 455.1786
MS$FOCUSED_ION: PRECURSOR_TYPE [M+H]+
MS$DATA_PROCESSING: RECALIBRATE identity on assigned fragments and MS1
MS$DATA_PROCESSING: WHOLE RMassBank 2.10.1
PK$SPLASH: splash10-056r-0902000000-eaa5797e43d45233dec1
PK$ANNOTATION: m/z tentative_formula formula_count mass error(ppm)
133.0495 C5H9O4+ 5 133.0495 0.09
134.0592 C8H8NO+ 4 134.06 -6.48
135.062 C7[13]CH8NO+ 1 135.0639 -14.21
148.0619 C6H6N5+ 4 148.0618 0.95
160.0613 C7H6N5+ 5 160.0618 -2.76
163.0716 C5H11N2O4+ 6 163.0713 1.83
175.0713 C9H9N3O+ 6 175.074 -15.66
176.0771 C8[13]CH9N3O+ 1 176.0779 -4.83
177.0857 C6H13N2O4+ 5 177.087 -7.44
178.0904 C5[13]CH13N2O4+ 1 178.0909 -2.84
292.0896 C11H12N6O4+ 8 292.0915 -6.48
308.1246 C14H18N3O5+ 5 308.1241 1.48
309.128 C13[13]CH18N3O5+ 1 309.128 0
310.1316 C12[13]C2H18N3O5+ 1 310.1314 0.91
PK$NUM_PEAK: 14
PK$PEAK: m/z int. rel.int.
133.0495 1572 31
134.0592 28756 569
135.062 3292 65
148.0619 456 9
160.0613 516 10
163.0716 308 6
175.0713 50476 999
176.0771 8212 162
177.0857 4452 88
178.0904 372 7
292.0896 300 5
308.1246 24992 494
309.128 5584 110
310.1316 336 6
//
