| Label | Id | |
|---|---|---|
| Cardanoldiene | 190771 | |
| Carnidazole | 177789 | |
| Ceceline | 3477 | |
| Cer(d18:0/23:0) | 187785 | |
| Cer(d18:1/19:0) | 142377 | |
| Cer(d42:1) | 85777 | |
| Cer(m18:1(4E)/26:0) | 187787 | |
| Ceronapril | 177391 | |
| Chalciporone | 187737 | |
| Chaparrin | 3577 | |
| Cherianoine | 229077 | |
| Chikusetsusaponin-IVa | 67977 | |
| Chlorohyellazole | 197776 | |
| Chlorozotocin | 82277 | |
| Cinereain | 169774 |