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| Chemical Name | Dosage | Reference |
|---|---|---|
| XESTOQUINONE | IC50=0.15 ug/ml | Bae, M. A., Tsuji, T., Kondo, K., Hirase, T., Ishibashi, M., Shigemori, H., Kobayashi, J. I. 1993. Inhibition of Mammalian Topoisomerase I by Xestoquinone and Halenaquinone. Biosci. Biotech. Biochem., 57: 330-331. |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Cornus florida | American Dogwood | 3 | 0 |
| Cornus mas | Cornelian Cherry; Sorbet | 3 | 0 |
| Cornus officinalis | Chinese Dogwood | 1 | 0 |
| Corylus americana | American Filbert; American Hazel | 1 | 0 |
| Corylus avellana | English Filbert; European Filbert; European Hazel; Hazel; Cobnut | 3 | 0 |
| Costus speciosus | Crepe Ginger; Wild Ginger; Cane Reed | 1 | 0 |
| Crataegus cuneata | Hawthorn | 1 | 0 |
| Crataegus laevigata | Hawthorn; English Hawthorn; Whitethorn; Woodland Hawthorn | 3 | 0 |
| Crataegus monogyna | Hawthorn; English Hawthorn | 4 | 80 |
| Crataegus rhipidophylla | Hawthorn | 3 | 0 |
| Crocus sativus | Saffron | 3 | 0 |
| Crotalaria juncea | Sunhemp | 1 | 0 |
| Cucurbita pepo | Pumpkin | 2 | 0 |
| Cuminum cyminum | Cumin | 1 | 0 |
| Curcuma longa | Turmeric; Indian Saffron | 4 | 520, 380 |
| Curcuma xanthorrhiza | Javan Turmeric; Temu Lawak | 1 | 20, 000 |
| Curcuma zedoaria | Shoti; Zedoary | 1 | 2, 000 |
| Cuscuta reflexa | Amarbel | 2 | 0 |
| Cyamopsis tetragonoloba | Guar; Cluster-Bean; Siam-Bean | 3 | 0 |
| Cymbopogon citratus | West Indian Lemongrass; Lemongrass | 2 | 0 |