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. 2020 Feb 7;11:48. doi: 10.3389/fphar.2020.00048

Table 3.

Identification of major chemical constituents in n-butanol extract and ethyl acetate extract form the C. daurica.

Peak Compounds Formula Ion mode Theoretical (m/z) n-butanol extract Ethyl acetate extract
RT (min) Measured (m/z) RT (min) Measured (m/z)
1 Catalpol* C15H22O10 Negative 361.11402 2.15 361.11423 2.00 361.11420
2 Isoxepac glucuronide C22H20O10 Negative 443.09837 2.58 443.09638 2.56 443.24743
3 Aucubin* C15H22O9 Negative 345.11910 3.48 345.11911 – –
4 Vanillic acid* C8H8O4 Negative 167.03498 4.29 167.03422 – –
5 Ajugol* C15H24O9 Negative 347.13475 4.72 347.13461 – –
6 Loganic acid* C16H24O10 Negative 375.12967 5.37 375.12974 5.37 375.12992
7 1β-methoxylgardendiol C10H14O5 Negative 213.07684 5.73 213.07636 – –
8 Cistanoside F* C21H28O13 Negative 487.14571 6.02 487.30565 5.94 487.07273
9 Gentiopicroside C16H20O9 Negative 355.10345 6.39 355.10373 – –
10 Caffeic acid* C9H8O4 Negative 179.03498 7.19 179.03583 7.13 179.03406
11 1β-hydroxyl-4-epigardendiol C11H16O5 Negative 227.09249 8.24 227.07684 – –
12 Campneoside II C29H36O16 Negative 639.19305 9.89 639.19274 9.88 639.19316
13 Echinacoside* C35H46O20 Negative 785.25096 10.16 785.25056 10.17 785.25104
14 Rutin* C27H30O16 Negative 609.14610 11.20 609.14640 – –
15 Arenarioside* C34H44O19 Negative 755.24040 11.49 755.23968 11.48 755.24013
16 Cynaroside* C21H20O11 Negative 447.09328 11.75 447.09342 11.76 447.12989
17 Rehmapicroside C16H26O8 Negative 345.15549 – – 11.84 345.15567
18 Verbascoside* C29H36O15 Negative 623.19814 12.14 623.19793 12.12 623.19875
19 4-Coumaric acid* C9H8O3 Negative 165.05462 12.37 165.05488 12.35 165.11338
20 Isoacteoside* C29H36O15 Negative 623.19814 12.83 623.19793 12.91 623.19875
21 Apigenin-7-O-β-D-glucuronide C21H20O10 Negative 431.09837 13.3 431.19252 13.27 431.09855
22 Tricin-7-O-β-D-glucuronide C23H24O12 Negative 491.11949 13.76 491.15596 13.78 491.19275
23 Cistanoside C C30H38O15 Negative 637.21379 13.83 637.10461 13.85 637.21399
24 Chrysoeriol-7-O-β-D–glucuronide C22H22O11 Negative 461.10893 14.40 461.16673 14.32 461.14572
25 Jionoside C C29H36O13 Negative 591.20831 14.69 591.07978 14.68 591.26153
26 Martynoside C31H40O15 Negative 651.22944 16.02 651.19323 16.03 651.19342
27 Luteolin* C15H10O6 Negative 285.04046 – – 16.64 285.04056
28 Apigenin* C15H10O5 Negative 269.04554 18.94 269.04461 18.93 269.04565
29 Tricin* C17H14O7 Negative 329.06667 19.45 329.08803 19.44 329.23330
30 Chrysoeriol* C16H12O6 Negative 299.05611 19.55 299.07734 19.54 299.05626

* Compared with standard compounds.