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. 2021 Jun 30;45(3):956–966. doi: 10.3906/kim-2101-28

Table 2.

Name of phenolic standards, precursor and fragment(s) ions, polarity, and the optimized ion mode for LC−MS/MS.

No Compound Precursorion [m/z] Fragment(s)ions [m/z] Energy Polarity
1 Pyrogallol 124.86 79.369.3 2320 Neg.
2 Gallic acid 169.7 126.280.5 1625 Neg.
3 Protocatechuic aldehyde 136.9 108.292.24 2525 Neg.
4 Chlorogenic acid 353.4 192.186.5 2143 Neg.
5 Caffeic acid 179.7 136.2135.2 1827 Neg.
6 4-Hydroxybenzaldehyde 121.9 121.193.5 2025 Neg.
7 Vanillin 150.91 136.192.3 1623 Neg.
8 Syringic acid 183.07 123.277.3 1323 Neg.
9 Syringaldehyde 180.88 166.1151.1 1623 Neg.
10 Ferulic acid 194.24 179.94135.35 1518 Neg.
11 Hesperidin 609.13 301.1164.1 2659 Neg.
12 Luteolin-7-Glucoside 446.89 284285 4540 Neg.
13 Rutin 609.37 300.6301.7 3834 Neg.
14 Oleuropein 539.1 275.8377.5 2216 Neg.
15 Benzoic acid 120.98 77.3 13 Neg.
16 Resveratrol 228.98 135.1107.2 1422 Pos.
17 Myricetin 316.91 179.2137.1 2225 Neg.
18 Apigenin 268.86 149.1117.2 2740 Neg.
19 Naringenin 273 153147.1 2420 Pos.
20 Ellagic acid 300.91 145.118.1 3928 Neg.