Table 1 The chemical composition of different solvent extracts of A. argyi.

From: Allelopathic effect of Artemisia argyi on the germination and growth of various weeds

Compd

Rt/min

Molecular Formula

Exptl.[M − H]−

MS/MS fragmentation

Identification

Water-soluble extract

50% ethanol extract

Pure ethanol extract

1

3.26

C16H18O9

353.0842

191.0515, 179.0294, 173.0415, 161.0181, 135.0404

5-Caffeoylquinic acid*

 + 

 + 

–

2

4.40

C16H18O9

353.0839

191.0511, 179.0305, 173.0391, 161.0198, 135.0403

3-Caffeoylquinic acid*

 + 

 +  + 

–

3

4.64

C16H18O9

353.0845

191.0513, 179.0302, 173.0407, 161.0191, 135.0400

4-Caffeoylquinic acid*

 + 

 + 

–

4

4.87

C9H8O4

179.0304

135.0402, 134.0323, 89.0333

Caffeic acid*

 +  +  + 

–

–

5

4.99

C12H18O7S

305.0665

225.1123, 96.9574

Hydroxyjasmonic acid-O-sulphate

 + 

 + 

–

6

5.37

C18H28O9

387.1636

207.0992

Hydroxyjasmonic acid hexose

 + 

 + 

–

7

5.75

C27H30O15

593.1507

533.1297, 503.1192, 473.1214, 383.0719, 353.0681, 117.0279

Apigenin-6,8-di-C-glucoside

 + 

 + 

–

8

6.07

C17H20O9

367.1016

193.0591, 191.0462, 173.0442

5-Feruoyl quinic acid

 + 

 + 

 + 

9

6.52

C26H28O14

563.1412

473.1059, 443.0958, 383.0724, 353.0629

Schaftoside*

 +  + 

 +  + 

–

10

6.66

C15H18O5

277.1041

259.0922, 233.1140, 215.1024

Artemargyinolide C

 + 

 + 

–

11

6.97

C26H28O14

563.1412

473.1059, 433.0950, 383.0627, 353.0685

Isoschaftoside*

–

–

–

12

7.39

C27H30O16

609.1473

301.0245, 300.0179

Rutin

–

 +  + 

 + 

13

7.52

C27H30O15

593.1508

285.0309, 284.0468, 133.0291

Kaempferol 3-rutinoside

 + 

 +  + 

–

14

7.65

C21H20O12

463.0862

301.0215, 300.0212, 271.0225, 255.0222

Quercetin − 3-O-glucoside

–

 + 

–

15

8.23

C25H24O12

515.1187

353.0829, 335.0738, 191.0505, 179.0306, 173.0407, 161.0189, 135.0399

3,4-Dicaffeoylquinic acid*

–

 +  + 

 + 

16

8.45

C25H24O12

515.1193

353.0845, 335.0781, 191.0516, 179.0315, 173.0442, 161.0166

1,5-Dicaffeoylquinic acid

 + 

 + 

 + 

17

8.57

C25H24O12

515.1188

353.0844, 335.0748, 191.0512, 179.0299, 173.0408, 161.0189, 135.0394

3,5-Dicaffeoylquinic acid*

 + 

 +  + 

 + 

18

9.18

C21H18O11

445.0754

270.0433, 269.0479

Apigenin-O-glycuronide

 + 

 + 

-

19

9.52

C25H24O12

515.1179

353.0842, 335.0720, 191.0512, 179.0302, 173.0408, 161.0196, 135.0394

4,5-Dicaffeoylquinic acid*

 + 

 +  +  + 

 + 

20

10.27

C25H24O11

499.1234

353.0838, 337.0976,319.0792,191.0520

3-Caffeoy,1-p-coumaroylquinic acid

–

 +  + 

–

21

11.28

C15H12O6

287.0518

151.0020, 135.0375

Dihydrokaempferol

–

 + 

 + 

22

11.88

C15H10O6

285.0367

175.O373, 151.0083, 133.0291,107.0193

Luteolin

–

 + 

–

23

12.61

C34H30O15

677.1521

515.1199, 497.1191, 353.0866, 335.0796, 191.0554, 179.0348, 173.0350, 161.0194

1,3,4-Tri-caffeoylquinic acid

–

 +  + 

–

24

14.07

C15H10O5

269.0419

151.0050, 117.0307

Apigenin*

 + 

 + 

 + 

25

14.46

C16H12O6

299.0526

285.0350, 284.0288, 256.0336, 227.0304, 212.0421, 186.0281, 136.9832

Hispidulin

–

 + 

 + 

26

15.11

C17H14O7

329.0632

314.0396, 299.0154, 145.0239

Jaceosidin*

–

 + 

 +  + 

27

17.36

C17H14O6

313.0676

298.0424, 283.0257

Dihydroxy-dimethoxy flavone

–

 + 

 + 

28

17.88

C18H16O7

343.0848

328.0480, 313.0371, 298.0146, 132.0202

Eupatilin*

 + 

 +  + 

 +  +  + 

29

18.73

C19H18O8

373.0907

358.0674, 343.0438, 328.0193, 315.0466, 285.0003, 257.0053, 229.0100, 201.0140, 173.0180, 145.0226, 117.0275

Casticin*

–

 + 

 + 

  1. “ +  +  + , +  + , + ” means that the relative content is from high to low, “–”means very low content; Compd. was the compound number; Rt represtented retention time; Exptl. [M-H]- was experimental m/z of molecular ions in the negative ionisation mode; *Compound was positively identified by comparing the retention time, high-resolution molecular ions and fragment ions with the authentic standards. The mass spectrometry data such as total ion chromatograms, molecular ion peaks and secondary fragment ions were collected by Masslynx 4.1 software and processed with ProGenesis QI V2.0 (Waters Corp., Milford, USA).
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