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. 2015 Mar 26;10(3):e0122733. doi: 10.1371/journal.pone.0122733

Table 1. Tentative identification of polyphenol extract from Phellinus igniarius by UPLC/ESI-MS in negative.

Compounds RT (min) Tentative identification MW [M-H]- m/z UPLC/ESI-MS (% base peak)
1 23.8 3,4-dihydroxybenzaldehyde 138.12 136.81 136.81(100), 274.86(14.27), 342.94(5.98)
2 33.8 4-(3,4-dihydroxyphenyl-3-buten-2one 178.19 176.81 176.81(100), 355.01(16.71)
3 48.0 inonoblin C 462.42 461.07 461.07(100), 196.79(6.10)
4 49.1 inonoblin C 462.42 461.07 461.07(100), 196.79(6.10)
5 51.2 phelligridin D 380.31 378.98 378.98(100), 492.97(6.69)
6 55.2 inoscavin C 420.38 419.06 419.06(100), 310.98(11.18), 758.17(2.60), 454.98(6.93), 847.25(6.49), 453.07(6.48), 375.01(6.34), 411.10(5.83), 459.04(5.77), 381.07(5)
7 56.7 phelligridin C 364.31 363.01 363.01(100), 379.00(5.57)
8 60 unknown n.d. 262.95 262.95(100), 571.02(15.03), 218.93(14.74), 360.98(13.51), 321.02(12.51), 419.05(9.56), 385.95(8.05), 359.11(7.97), 343.06(7.10),379.00(6.56), 250.91(6.46), 364.97(5.78), 751.02(5.76)
9 64.7 interfungin B 422.40 421.12 421.12(100), 431.14(66.72), 459.08(9.10), 248.92(8.02), 265.03(6.06), 475.23(5.78), 771.24(5.77)
10 69.9 unknown n.d. 246.90 246.90(100), 315.02(15.50), 871.16(9.39), 305.09(7.68), 433.05(5.47), 359.18(5.39), 309.01(5.07)