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. 2015 Jan 8;20(1):913–928. doi: 10.3390/molecules20010913

Table 1.

Identification of phenolic compounds in Haplopappus spp. tea and methanol extract by HPLC-DAD-ESI-MS data.

Peak Rt (min) UV λmax (nm) MW [M−H]‾ and Ions Tentative Identification
1 10.9 323, 300 sh, 238 368 367, 193, 134 Feruloylquinic acid
2 11.3 325, 300 sh, 240 354 353, 191, 173 Caffeoylquinic acid (Chlorogenic acid)
3 16.6 - 530 529, 501, 367, 193 Feruloyl caffeoylquinic acid isomer
4 19.6 321, 300 sh, 236 706 705, 543, 367, 349, 193, 173 Caffeoyl diferuloylquinic acid
5 21.1 327, 300 sh, 242 516 515, 353, 173;
MS2 353, 203, 191		 3,5-Dicaffeoylquinic acid
6 23.5 349, 320 sh, 245 580 579, 447, 285 Kaempferol 3-O-hexoside pentoside
7 23.7 352, 300 sh, 260 sh, 255 610 609, 477, 315 Quercetin methyl ether pentoside hexoside
8 23.8 323, 300 sh, 242 530 529, 367, 173 Feruloyl caffeoylquinic acid isomer
9 24.0 327, 300 sh, 243 516 515, 353, 173;
MS2 353, 299, 203		 3,4-Dicaffeoylquinic acid
10 24.0 - 478 477, 315, 301, 153 Quercetin methyl ether hexoside
11 26.2 323, 300 sh, 239 544 543, 349, 193, 173 Diferuloylquinic acid isomer
12 26.7 344, 300 sh, 265 448 447, 285 Kaempferol-3-O-hexoside
13 26.8 325, 300 sh, 242 530 529, 367, 173 Feruloyl caffeoylquinic acid isomer
14 27.2 355, 300 sh, 260 sh, 253 492 491, 315 Quercetin methyl ether glucuronate
15 29.8 325, 300 sh, 239 544 543, 367, 349, 193, 173 Diferuloylquinic acid isomer
16 31.1 370, 300 sh, 260 sh, 253 302 301, 179, 151, 107 Quercetin
17 33.4 358, 300, 260 sh, 255 316 315, 300, 271, 255, 179 Quercetin 3-O-methyl ether
18 36.0 290, 235 302 301, 273, 165 Trihydroxy methoxyflavanone
19 36.9 364, 320 sh, 265 286 285, 268, 257 Kaempferol
20 38.5 346, 296, 253, 231 330 329, 314, 176; 176, 148, 104 Quercetin dimethyl ether
21 39.4 - 360 359, 344, 329, 317, 299 Quercetin tetramethyl ether
22 39.9 349, 330 sh, 300 sh, 267 300 299, 284, 271, 166 Kaempferol methyl ether
23 43.9 287, 231 316 315, 300, 193, 165 Dihydroxy dimethoxyflavanone
24 47.6 364, 320sh, 265 300 299, 284, 271, 165 Kaempferol 3-O-methyl ether
25 49.5 349, 369 314 313, 298, 283 Kaempferol dimethyl ether
26 50.4 - 378 377, 317, 275, 257 Myricetin monoacetate
27 51.2 - 320 319, 301, 273 Dihydromyricetin

-, not measured due to the low amount of the compound.