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Logo of nihpaAbout Author manuscriptsSubmit a manuscriptHHS Public Access; Author Manuscript; Accepted for publication in peer reviewed journal;
J Am Soc Mass Spectrom. Author manuscript; available in PMC 2010 May 1.
Published in final edited form as:
J Am Soc Mass Spectrom. 2009 May; 20(5): 805–818.
Published online 2008 December 31. doi: 10.1016/j.jasms.2008.12.017

Table 1

CAD mass spectra of ESI-produced [M + H]+ ions (quadrupole ion trap).

CompoundFragment ions: m/z(abundance)
- H2O- CO- C6H6- C6H5R- ketene (-methyl ketene*)benzoyl m/z 105m/z 103
chalcone (1)191(13)181(14)131(100)ND(10)(4)
2-methoxychacone (2)NDNDNDND197(100)(2)ND
2-methoxy-β-methylchalcone (3)235(32)NDNDND*197(100)NDND
2-hydroxychalcone (4)NDNDNDND183(100)(80)ND
4-methoxychalcone (5)221(28)211(24)161(100)131(33)ND(55)(3)
4-hydroxychalcone (6)207(28)197(25)147(100)131(22)ND(41)(2)
2-chlorochalcone (7)225(14)215(9)165(100)131(26)201(2)(4)(8)