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. 2020 Dec 9;9(12):1740. doi: 10.3390/plants9121740

Table 3.

Mass spectrometric identification results.

No. Attempted Identification Abbr. RT (min) UV (nm) Molecular Formula MW (g/mol) (M+H)+
(m/z)		 Major Fragments (M+H)+(m/z) Collision Energy (eV)
1 ♂ Quercetin-O-sophoroside Q-soph 16.7 360 C27H30O17 626.517 627.157 303.050 465.104 - 15
2 Isoorientin-2’’-O-glucoside I-gluc 18.4 360 C27H30O16 610.517 611.162 449.105 329.066 287.059 30
3 Luteolin-C-glucoside L-gluc 18.7 360 C21H20O11 448.377 449.109 329.07 287.055 - 30
4 Luteolin-C-hexoside-O-rhamnoside L-hex-rhamn 19.1 360 C27H30O15 594.518 595.167 449.108 329.068 287.054 30
5 ♂ Kaempferol-O-sophoroside K-soph 20.0 360 C27H30O16 610.517 611.161 287.056 153.021; 121.029; 165.02 (70eV) - 30
6 Vitexin-2’’-O-glucoside V-gluc 21.3 360 C27H30O15 594.518 595.166 433.11 313.072 271.059 30
7 Vitexin-2’’-O-rhamnoside * V-rhamn 22.6 360 C27H30O14 578.519 579.171 433.113 313.074 271.058 15
8 Luteolin-7-O-glucuronide * L-glucu 25.7 360 C21H18O12 463.460 463.088 287.056 - - 30
9 Apigenin-7-O-glucuronide * A-glucu 28.7 320 C21H18O11 446.361 447.092 271.061 - - 30
10 Chrysoeriol-O-glucuronide isomer 1 C-glucu-1 28.7 360 C22H20O12 476.387 477.104 301.071 286.047 258.050 45
11 Chrysoeriol-O-glucuronide isomer 2 C-glucu-2 28.8 360 C22H20O12 476.387 477.104 301.071 286.048 258.051 45
12 Apigenin-4’-methoxy-7-glucuronide A-meth-glucu 29.4 320 C22H20O11 460.388 461.110 285.077 133.017 153.014 45
13 Luteolin * Lut 29.4 360 C15H10O6 286.236 287.056 153.02 135.046 161.023 45
14 Apigenin * Api 29.9 320 C15H10O5 270.237 271.066 153.019 145.028 121.03 45
15 Chrysoeriol * Chryso 30.2 360 C16H12O6 300.260 301.072 286.048 258.054 - 30

* Identification confirmed by comparison with the reference standard; ♂ compounds isolated only in male plants.