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Table 1 Prenylquinones identified from UHPLC-APCI-QTOFMS data acquired in negative and positive ionization modes.

From: A novel method for prenylquinone profiling in plant tissues by ultra-high pressure liquid chromatography-mass spectrometry

No RT (min) APCI - m/z (-) APCI + m/z (+) formula MS/MS (-) Identification
1 0.76 (M)- 446.3763 -a -a C29H50O3 177.0919, 163.0764 α-tocopherol-quinone
2 0.92 (M-H)- 415.3575 -a -a C28H48O2 149.0605, 121.0655 γ-tocopherol
3 1.00 (M-H)- 429.3734 (M+H)+ 431.3877 C29H50O2 163.0760, 135.0812 α-tocopherol
4 1.28 (M)- 450.3504 (M+H)+ 451.3572 C31H46O2 210.0680, 185.0607 phylloquinone
5 1.52 (M-H)- 765.6183 -a -a C53H81O3 750.5956, 149.0608 hydroxyplastochromanol
6 1.71 (M)- 764.6102 -a -a C53H80O3 149.0604 hydroxyplastoquinone
7 1.72 (M-2H)- 748.6158 (M+H)+ 751.6385 C53H82O2 188.0836, 149.0605 plastoquinol
8 1.89 (M-2H)- 794.6214 (M+H)+ 797.6448 C54H84O4 779.5970, 219.0661 ubiquinol
9 2.12 (M-H)- 749.6227 (M+H)+ 751.6395 C53H82O2 734.6009, 149.0608 plastochromanol-8
10 2.16 (M)- 794.6212 (M+H)+ 795.6300 C54H82O4 779.5974, 219.0655 ubiquinone
11 2.43 (M)- 748.6152 (M+H)+ 749.6232 C53H80O2 188.0841, 149.0606 plastoquinone
  1. a, not detected. RT, retention time. Known chemical structures are available in Figure 1.