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Table 1 Proposed compounds detected in G. pensylvanicum obtained by UPLC-ESI- MS/MS

From: Caffeoylquinic acid derivatives rich extract from Gnaphalium pensylvanicum willd. Ameliorates hyperuricemia and acute gouty arthritis in animal model

Peak Rt (min) UV λ max (nm) m/z MS/MS fragments Proposed compound Reference
1 2.41 213.7, 325.7 352.9 146.1 3-caffeoylquinic acid [18,19,20,21,22]
2 2.64 322.7 352.9 249.2 4-caffeoylquinic acid [18,19,20,21]
3 4.69 235.7, 325.7 367.0 308.9, 201.9, 175.3 feruloylquinic acid [20, 21]
4 5.31 252.7, 345.7 447.1 435.7, 293.5, 106.6 luteolin-7-O-glucoside [22]
5 5.71 219.7, 242.7, 324.7 515.2 428.8, 334.7, 94.9 1, 3-di-caffeoylquinic acid [19,20,21]
6 5.89 218.7, 242.7, 326.7 515.3 490.9, 352.0, 179.1 1, 4-di-caffeoylquinic acid [19, 20]
7 6.34 218.7, 243.7, 326.7 515.2 352.9, 173.0 3, 4-di-caffeoylquinic acid [18,19,20,21]
8 6.61 244.7, 326.7 515.2 434.1, 346.3, 178.8 4, 5-di-caffeoylquinic acid [18,19,20,21]
9 6.68 243.7, 327.7 601.0 288.4, 240.9 3-methoxyoxaloyl-1, 5-di-caffeoylquinic acid [22]
10 7.03 243.7, 325.7 528.7 367.4, 172.8, 149.0 1-caffeoyl-3-feruloylquinic acid [21]
11 7.54 243.7, 326.7 529.2 362.7, 349.2, 179.2 4-caffeoyl-3-feruloylquinic acid [18, 21]
12 8.01 244.7, 328.7 529.0 374.0, 179.0, 155.6 4-caffeoyl-5-feruloylquinic acid [18, 21]
13 8.21 243.7, 327.7 557.0 395.4, 233.3, 173.0 acetyldi-caffoylquinic acids [22]
14 8.26 243.7, 326.7 615.4 453.5, 360.9, 235.8 succinoyl dicaffeoylquinic acids [20]