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| Title | Activity Count |
|---|---|
| NOOTKATOL | 1 |
| NORBIXIN | 1 |
| NORDIHYDROGUAIARETIC-ACID | 5 |
| NORISOGUAIACIN | 1 |
| NOTHOFAGIN | 1 |
| OBAKULATONE | 1 |
| OCTACOSANOL | 2 |
| OCTYL-GALLATE | 1 |
| OLEANDRIN | 1 |
| OLEANOLIC-ACID | 10 |
| OLEIC-ACID | 2 |
| OLEUROPEIN | 2 |
| OLIVETOL | 1 |
| OMEGA-3-FATTY-ACIDS | 3 |
| OPC | 5 |
| OPCS | 5 |
| ORIENTIN | 2 |
| OROXYLIN-A | 2 |
| OSAGIN | 2 |
| OSTHOL | 1 |
| Title | Chemical Count | Activity Count |
|---|---|---|
| Quisqualis indica | 16 | 13 |
| Rabdosia adenantha | 1 | 1 |
| Raphanus sativus | 32 | 16 |
| Rauvolfia serpentina | 7 | 10 |
| Rauvolfia tetraphylla | 1 | 1 |
| Rauvolfia vomitoria | 3 | 5 |
| Ravensara aromatica | 9 | 8 |
| Rehmannia glutinosa | 15 | 9 |
| Rhamnus cathartica | 3 | 10 |
| Rheedia gardneriana | 1 | 1 |
| Rheum officinale | 16 | 21 |
| Rheum palmatum | 26 | 16 |
| Rheum rhabarbarum | 37 | 24 |
| Rhizophora mangle | 12 | 10 |
| Rhizophora mucronata | 1 | 1 |
| Rhododendron anthopogon | 1 | 1 |
| Rhododendron arboreum | 1 | 2 |
| Rhododendron dauricum | 18 | 17 |
| Rhododendron falconeri | 1 | 2 |
| Rhododendron ferrugineum | 7 | 9 |