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. 2021 Jul 15;12(2):123–130. doi: 10.1016/j.jtcme.2021.07.001

Table 3.

Composition of Fr40 determined by HPLC-ESI-MS.

Peak RT (min) % λmax (nm) MS1 (−)
(m/z)
MS (m/z) Propose struture
1 24.8 1.02 269, 335 593.1495 593,150(100), 217.004(60) Isovitexin-7-O-glucoside
2 26.1 5.41 241, 342 447.0932 447.093(100), 217.004(16) Isoorientin
3 26.9 35.79 243, 347 461.1094 461.109(100) Swertiajaponin
4 30.2 1.21 269, 335 577.1546 577.155(100), 461.108(39), 217.004(49) Isovitexin-O-rhamnoside
5 30.6 2.07 240, 335 431.0979 431.098(100), 217.004(30) Isovitexin
6 31.2 7.86 271, 336 591.1709 591.171(100), 445.114(8), 217.004(4) Swertisin-O-rhamnoside
7 31.5 37.34 270, 336 445.1144 445.114(100) Swertisin
8 33.1 9.29 270, 345 475.1244 475.124(100), 217.004(4) Isoorientin 7,3′-dimethylether

RT retention time (min); peak of identified compounds.