| Label | Id | |
|---|---|---|
| CLARITHROMYCIN | 3732 | |
| Caffeine | 27732 | |
| Camphor | 36773 | |
| Ceftizoxime | 553473 | |
| Cetraxate | 17340 | |
| Chamazulene | 3573 | |
| Cladribine | 567361 | |
| Clarithromycin | 3732 | |
| Clemastine | 3738 | |
| Creatinine | 16737 | |
| Crotonoyl-CoA | 15473 | |
| Cyclohexylamine | 15773 | |
| Cystine | 17376 | |
| D-Altronate | 17360 | |
| D-Glcp-(1->2)-beta-D-Galp | 157327 |