Table I.
MS/MS data of the polyphenols in Artemisia iwayonogi (Dowijigi).
| Peak no. | Compound | Retention time (min) | UV max, nm | [M-H]− | MS/MS | (Refs.) |
|---|---|---|---|---|---|---|
| 1 | Protocatechuic aldehyde | 12.866 | 278, 310 | 137 | 109 | (40) |
| 2 | Gallocatechin | 14.713 | 272 | 305 | 261, 221, 219, 179 | (41) |
| 3 | Methyl catechin | 18.337 | 272 | 305 | 137 | (42) |
| 4 | Epicatechin | 19.460 | 272 | 305 | 139 | (42) |
| 5 | Caffeic acid | 19.979 | 323 | 179 | 135 | (43) |
| 6 | Epigallocatechin | 26.570 | 272 | 305 | 261, 221, 219, 179 | (41) |
| 7 | Catechin | 27.003 | 272 | 289 | 245, 205 | (41) |
| 8 | 5-caffeoylquinic acid | 27.718 | 284 | 353 | 191 | (41) |
| 9 | Epigallocatechin-3-gallate | 28.929 | 294 | 457 | 331, 305, 169 | (41) |
| 10 | 5-Feruoylquinic acid | 30.802 | 272 | 367 | 193, 191, 173 | (44) |
| 11 | Rhamnose-C-acetyl-hexoside apigenin | 31.828 | 344 | 619 | 499, 457, 413, 341, 311, 293, 315 | (45) |
| 12 | Liquiritigenin-7-O-sulfate | 33.610 | 342 | 335 | 255, 135, 119 | (46) |
| 13 | Quercetin-rutinoside | 35.853 | 254, 352 | 609 | 301 | (41) |
| 14 | Quercetin-3-galactoside | 36.234 | 254, 370 | 463 | 301 | (47) |
| 15 | Quercetin-3-glucoside | 37.718 | 256, 354 | 463 | 301 | (47) |
| 16 | Malyidin-3-glucoside | 38.211 | 256, 354 | 493 | 331 | (48) |
| 17 | 3,4-di-O-Caffeoylquinic acid | 40.702 | 326, 300 | 515 | 353, 335, 191, 179, 173 | (49) |
| 18 | 3,5-di-O-Caffeoylquinic acid | 42.525 | 328, 300 | 515 | 353, 354, 191, 179 | (9) |
| 19 | Quinic acid derivate | 45.298 | 324, 226 | 515 | 353, 335, 191, 179, 173 | (50) |
| 20 | 4,5-di-O-Caffeoylquinic acid | 45.929 | 326, 300 | 515 | 353, 335, 317, 299, 191, 179, 173 | (49) |
| 21 | Mearnsetin-O-diglucoside | 47.971 | 330 | 655 | 535, 493, 492, 331, 329, 316, 301 | (50) |
| 22 | Quercetin diglycoside | 51.437 | 330 | 771 | 609, 463, 608, 301, 300 | (49) |
| 23 | Quercetin dihexoside | 53.260 | 354 | 625 | 463, 301 | (45) |
| 24 | Caffeoyl dihexoside | 53.816 | 328 | 503 | 342, 341, 179 | (49) |
| 25 | 3-Caffeoyl-4-feruoyl-quinic acid | 56.817 | 322, 286 | 529 | 367, 353, 255, 203, 191, 179, 173 | (50) |
| 26 | Luteolin | 58.962 | 358, 254 | 285 | 133 | (51) |
| 27 | Isorhamnetin | 59.497 | 344, 268 | 315 | 300 | (51) |
| 28 | 5,7,4′,5′-Tetrahydroxy-6,3′-Dimethoxyflavone | 59.991 | 348, 270 | 345 | 330, 315, 287, 259, 136 | (44) |
| 29 | Mearnsetin-glu | 67.527 | 335, 265 | 493 | 478, 331, 330, 316, 315 | (50) |
| 30 | Gliricidin | 68.182 | 330, 272 | 299 | 284, 271, 256, 212, 175 | (52) |
| 31 | Kaempferol methylether | 68.523 | 348, 266 | 299 | 285, 255, 227 | (45) |
| 32 | 5,7,3′-Trihydroxy-6,4′-dimetoxyflavone | 69.006 | 343, 272 | 329 | 314, 299 | (47) |
| 33 | 5,7,3′-Trihydroxy-6,4′-dimetoxyflavone | 70.197 | 343, 272 | 329 | 314, 299 | (47) |
| 34 | 5,7,3′-Trihydroxy-6,4′-dimetoxyflavone | 72.526 | 343, 272 | 329 | 314, 299 | (47) |
| 35 | 3-Hydroxy-6,7,4′-trimethoxy flavone | 74.865 | 336, 247 | 343 | 328, 327, 313, 261 | (50) |
| 36 | Quercetagetin-tetramethyl ester | 75.648 | 354, 272 | 373 | 358, 343, 328, 313 | (47) |
| 37 | Genkwanin | 77.049 | 335, 268 | 283 | 268 | (47) |
MS/MS, tandem mass spectrometry. [M-H], M; Main structure and H; Hydrogen ion.