| # Activity | Chemical | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|---|
| 0 | CIS-ANTHERAXANTHIN-5,6-MONOEPOXIDE | Plant | -- | -- | * | |
| 0 | CIS-NEOXANTHIN | Plant | -- | -- | * | |
| 0 | CIS-VIOLAXANTHIN | Plant | -- | -- | * | |
| 23 | CITRIC-ACID | Tuber | -- | 2000.0 | * | |
| 1 | CITROSTADIENOL | Plant | -- | -- | J.S. Glasby Dict.Pls Containing 2ndary Metabolite. 1991. | |
| 2 | COBALT | Tuber | 0.002 | 0.3 | * | |
| 12 | COPPER | Tuber | 0.48 | 14.0 | 0.31 | * |
| 0 | CROTONALDEHYDE | Plant | -- | -- | * | |
| 0 | CRYPTOCHLOROGENIC-ACID | Tuber | -- | 675.0 | * | |
| 2 | CRYPTOXANTHIN | Plant | -- | -- | * | |
| 0 | CRYPTOXANTHIN-5,6-DIEPOXIDE | Plant | -- | -- | * | |
| 0 | CUSCOHYGRINE | Root | -- | -- | * | |
| 5 | CYANIN | Flower | -- | -- | * | |
| 0 | CYANOSIDE | Plant | -- | -- | J.S. Glasby Dict.Pls Containing 2ndary Metabolite. 1991. | |
| 7 | CYCLOARTENOL | Tuber | -- | -- | * | |
| 0 | CYCLODEHYDROISOLUBIMIN | Tuber | -- | 0.7 | * | |
| 0 | CYCLOLAUDENOL | Fruit | -- | -- | * | |
| 3 | CYNAROSIDE | Flower | -- | -- | * | |
| 2 | CYSTINE | Tuber | 230.0 | 1235.0 | -0.64 | * |
| 0 | DEACETYL-PHYTUBERIN | Tuber | -- | 36.0 | * |