Table 3.
Identified compounds in the methanol extract by LC-ESI-MS/MS
| S.No. | Compound | Actual mass (m/z) | ESI+ (m/z) | ESI− (m/z) | RT (min) | Area sum% |
|---|---|---|---|---|---|---|
| 1. | 4″-O-β-D-glucosyl-6′-O-(4-O-β-D-glucosylcaffeoyl)-linearoside | 1008.31 | 1007.10 [M - H]− | 1.48 | 20.42 | |
| 2. | Loganic acid | 376.13 | 399.00 [M + Na]+ | 6.84 | 3.58 | |
| 3. | Swertiamarin | 374.12 | 397.00 [M + Na]+ | 7.3 | 4.25 | |
| 4. | Gentiopicroside | 356.11 | 379.00 [M + Na]+ | 7.95 | 32.66 | |
| 5. | Swertisin | 446.12 | 444.90 [M - H]− | 7.95 | 32.66 | |
| 6. | Sweroside | 358.12 | 359.10 [M + H]+ | 8.48 | 3.58 | |
| 7. | Norswertianolin | 422.07 | 423.00 [M + H]+ | 12.13 | 2.41 | |
| 8. | Gentisin | 256.07 | 279.00 [M + Na]+ | 23.81 | 6.43 | |
| 9. | Gentioside | 552.14 | 551.20 [M - H]− | 28.22 | 0.13 | |
| 10. | Isogentisin | 256.07 | 255.10 [M - H]− | 29.88 | 1.52 | |
| 11. | Gentianine | 175.06 | 214.90 [M + K]+ | 33.44 | 17.85 |
RT Retention time