Research Article

Evaluation of Antioxidant Activity and Acute Toxicity of Clausena excavata Leaves Extract

Table 2

Compound identified from MECE via LCMS/MS analysis.

Retention timeMolecular weightMS/MS fragments ions 
,
Tentative IdentificationReferences

3.69756.2(−) 755, 300, 271.0, 255.1, 179.0, 151.0Quercetin-rhamnose-hexose-rhamnoseChua et al., 2011 [21] 
Kachlicki et al., 2008 [22] 
Del Rio et al., 2004 [23]

3.9772.2(−) 771, 316, 271.1, 179.0, 151.0Myricetin glucoside 
Conjugate 
Myricetin 3-O-rhamnosyl-glucoside 7-O-rhamnoside
Chua et al., 2011 [21] 
Kachlicki et al., 2008 [22] 
Del Rio et al., 2004 [23]

4.3740.2(−) 739.2, 284.1, 255.0, 179, 151.0, 179.0,Kaempferol conjugate Chua et al., 2011 [21] 
Zhao et al., 2011 [24]

7179.3(+) 161.2, 135.1, 133.1Caffeic acid Chua et al., 2011 [21]

6.72(+) 77.0, 91.0, 95.0, 105.0, 119.1, 134.1, 148.3, 149.2, 156.3, 161.3, 174.4, 177.3, 179.3, 190.4, 202.4, 204.4, 206.4, 218.4, 221.4, 230.4, 232.4, 243.4, 245.4, 246.4, 256.4, 270.4, 284.4, 288.4, 298.4, 316.4, 326.4, 344.4, 3628-Geranyloxy psoralen

5.95(+) 77.91, 91.0, 95.0, 111.0, 119.0, 133.1, 147.2, 149.2, 161.2, 177.2, 179.3, 191.3, 203.3, 243.3, 245.4, 247.3, 255.3, 271.4, 273.4, 289.4, 291.4, 313.4, 323.4, 331.4, 341.4, 359.4, 377.4Unidentified furocoumarin

5.27(+) 117.1, 134.2, 146.2, 147.2, 150.2, 160.3, 163.3, 180.3, 202.3, 246.4, 473.4, 491.5, 509.5, 527.6Unidentified flavonoids

5.5(+) 119.0, 134.1, 146.2, 147.2, 162.3, 164.3, 180.3, 201.3, 229.3, 245.3, 240.4, 246.4, 294.4, 341.3, 404.4, 491.4, 523.3, 531.5, 541.6, 559.6Unidentified flavonoids

6.2(+) 146.2, 179.3, 194.4, 203.3, 247.3, 292.4, 324.4, 324.4, 370.4, 388.4, 470.4, 557.6, 735.7 Unidentified flavonoids

4.72(−) 107.0, 123.0, 137.1, 139.1, 163.1, 179.1, 195.2, 197.2, 241.1 Unidentified phenolic acid