| Chorionic gonadotropin (hCG) | 37.5 | 8408467 |
| Chorionic somatomammotropin hormone 1 | 25.02 | UniProtKB |
| Chymase | 27.325 | UniProtKB |
| Ciliary neurotrophic factor | 22.931 | UniProtKB |
| Coagulation factor X | 54.732 | UniProtKB |
| Collagen alpha-1(II) chain | 141.785 | UniProtKB |
| Collagen alpha-1(III) chain | 138.564 | UniProtKB |
| Collagen alpha-1(IV) chain | 160.611 | UniProtKB |
| Collagen type 1 | 300 | https://www.chondrex.com/documents/1005.pdf |
| Collagen type 3 | 300 | https://www.chondrex.com/documents/1305.pdf |
