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Retention time (HPLC–UV), UV spectra, molecular weight and molecular ions of analyzed compounds.
| Compound | Molecular weight | tR | UVmax | Molecular ions | |
|---|---|---|---|---|---|
| [M + H]+ | [M + Na]+ | ||||
| (1) Phyllanthin | 418 | 12.2 | 229.279 | 419 | 441 |
| (2) Hypophyllanthin | 430 | 12.8 | 235.278 | 431 | 453 |
| (3) Nirtetralin | 430 | 14.9 | 234.281 | 431 | 453 |
| (4) Niranthin | 432 | 16.0 | 232.279 | 433 | 455 |
