| Label | Id | |
|---|---|---|
| Cardinalin-4 | 216149 | |
| Caryose | 204971 | |
| Cer(m18:1(4E)/26:1(17Z)) | 186549 | |
| Chlornaphazine | 80497 | |
| Chlorogentisylquinone | 224983 | |
| Chrysoqueen | 204149 | |
| Chrysosplenin | 184997 | |
| Clavorubin | 224936 | |
| Clofilium | 34649 | |
| Clonostachydiol | 70049 | |
| Coniosclerodione | 203496 | |
| Cryptodorine | 174959 | |
| Cryptotanshinone | 149838 | |
| Cuculoquinone | 224987 | |
| Curvopeptin-2 | 225949 |