| CDC25C |
| CDPKS, Syntide analog |
| CDR-H3/C2 |
| CEA (605-613) |
| CEA Related, QYSWFVNGTF |
| CEA Related, TYACFVSNL |
| Cecropin A |
| Cecropin A (1-7)-Melittin A (2-9) amide |
| Cecropin A (1-8)-Melittin (1-18) amide |
| Cecropin B |
| Cecropin B, Free Acid |
| Cecropin P1 (porcine) |
| CEF10 |
| CEF3 |
| CEF4 |
| CEF6 |
| Ceratotoxin A |
| Ceratotoxin B |
| Cetrorelix Acetate |
| CFP10 (71-85) |
| CFTR (108-117), Pseudomonas aeruginosa Inhibitor |
| Charybdotoxin |
| Cholecystokinin Octapeptide (1-2) (desulfated) |
| Cholecystokinin Octapeptide (1-3) (desulfated) |
| Cholecystokinin Octapeptide (1-4) (desulfated) |
| Cholecystokinin Octapeptide (1-5) (desulfated) |
| Cholecystokinin Octapeptide (1-6) (desulfated) |
| Cholecystokinin Octapeptide (2-8) (desulfated) |
| Cholecystokinin Octapeptide (desulfated) |
| Cholecystokinin Octapeptide free acid (desulfated) |
| Cholecystokinin Precursor (107-115) (human) (desulfated) |
| Cholecystokinin Precursor (24-32) (rat) |
| Cholecystokinin-33 (10-20) (bovine, porcine) |
| Cholecystokinin-33 (1-21) (porcine) |
| Chorionic Gonadotropin-β(109-119) amide (human) |
| Chorionic Gonadotropin-β(109-145) (human) |
| Chromogranin A (324-337), human |
| Chromostatin, bovine |
| CK1tide |
| CKS-17 |
| CKS-17 (7-12) |
| CLIP(85–99) |
| Collagen Binding Fragment |
| Complement anaphylatoxin C5a (37 - 53), human |
| Conantokin G |
| Conantokin G (free acid) |
| Conantokin T, Marine snail, Conus tullpa |
| Conopressin S |
| Contraceptive Tetrapeptide |
| Corazonin, American Cockroach, Periplaneta americana |
| Corticostatin, human |
| Corticostatin, rabbit |
| Corticotropin Releasing Factor, bovine |
| Corticotropin Releasing Factor, human, rat |
| Corticotropin Releasing Factor, ovine |
| Cortistatin 14, (rat) |
| Cortistatin 17, human |
| C-Peptide (57-87), human |
| C-Peptide 1 (rat) |
| C-Peptide 2 (rat) |
| C-Peptide, dogs |
| C-Reactive Protein (CRP) (174-185) |
| C-Reactive Protein (CRP) (201-206) |
| C-Reactive Protein (CRP) (77-82) |
| CREB327 (113 - 126) |
| CREBtide |
| CRF (6-33) (human, rat) |
| Cripto-1, CR-1 |
| Crustacean Cardioactive Peptide (CCAP), amide |
| Crustacean Cardioactive Peptide, CCAP |
| Crustacean Erythrophore Concentrating Hormone |
| Crystalline |
| CSP |
| CTAP |
| C-telopeptide |
| C-terminal Proghrelin Isoform Peptide, mouse |
| CTX IV (6-12) |
| C-Type Natriuretic Peptide (1-22), human |
| C-Type Natriuretic Peptide (1-53) (human) |
| C-Type Natriuretic Peptide, chicken |
| Cys-CD36 (139-155) |
| Cys-Gly-His-Gly-Asn-Lys-Ser-Amyloid ß -Protein (33-40) |
| Cys-Gly-Lys-Arg-Amyloid - ß Protein (1-42) |
| Cys-Gly-Lys-Lys-Gly-Amyloid ß -Protein (33-40) |
| Cys-Gly-Lys-Lys-Gly-Amyloid ß -Protein (35-40) |
| Cys-Gly-Lys-Lys-Gly-Amyloid ß -Protein (36-42) |
| Cys-Gly-Lys-Lys-Gly-Amyloid ß -Protein (37-42) |
| Cys-GM-CSF (17-31) |
| Cys-β- Amyloid (1 - 40) |
| Cys-β- Amyloid (12 - 28) |
| DAGO |
| D-Ala-D-Ala |
| D-Ala-Leu |
| Dansyl-Y-V-G |
| DAP10 Signaling Fragment |
| D-D-D-D-D |
| D-D-D-D-D-D |
| Decorsin, Leech |
| Defensin (human) HNP-2 |
| Defensin-1 (human) HNP-1 |
