| Label | Id | |
|---|---|---|
| Cantleyine | 3365 | |
| Capaurine | 3366 | |
| Capillarisin | 3368 | |
| Capillin | 3369 | |
| Capreomycin | 3371 | |
| Capsaicin | 3374 | |
| Capsanthin | 3375 | |
| Capsorubin | 3378 | |
| Caranine | 3383 | |
| Carapanaubine | 3384 | |
| Carbaryl | 3390 | |
| Carbazole | 3391 | |
| Carbendazim | 3392 | |
| Carbidopa-levodopa | 3396 | |
| Carbinoxamine | 3398 |