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| Title | Activity Count |
|---|---|
| PROTOSAPPANIN-A | 1 |
| PROTOSAPPANIN-B | 1 |
| PROTOVERATRINE | 1 |
| PROTOVERINE | 1 |
| PROVERATRINE-A | 2 |
| PROVERATRINE-B | 2 |
| PROXIMOL | 1 |
| PRUNIN | 1 |
| PRUNUSOL | 1 |
| PRURIENININE | 1 |
| PSEUDOEPHEDRINE | 3 |
| PSEUDOSEMIGLABRINE | 1 |
| PSORALEN | 1 |
| PSYCHOTRIDINE | 1 |
| PTEROPHINE | 1 |
| PTEROSTILBENE | 3 |
| PTERYXIN | 3 |
| PUERARIN | 8 |
| PULEGONE | 1 |
| PUNARNAVINE | 1 |
| Title | Chemical Count | Activity Count |
|---|---|---|
| Rotala floribunda | 1 | 1 |
| Roylea elegans | 1 | 1 |
| Rubia cordifolia | 8 | 16 |
| Rubus chamaemorus | 10 | 16 |
| Rubus chingii | 7 | 17 |
| Rubus fruticosus | 10 | 15 |
| Rubus idaeus | 56 | 23 |
| Rubus parviflorus | 3 | 3 |
| Rubus phoenicolasius | 3 | 4 |
| Rubus sp. | 2 | 1 |
| Rubus spectabilis | 3 | 3 |
| Ruellia tuberosa | 3 | 4 |
| Rumex acetosa | 18 | 19 |
| Rumex acetosella | 6 | 15 |
| Rumex crispus | 25 | 21 |
| Rumex hymenosepalus | 2 | 3 |
| Ruscus aculeatus | 26 | 19 |
| Ruta graveolens | 23 | 15 |
| Rzedowskia tolantonguensis | 1 | 1 |
| Saccharum officinarum | 1 | 1 |