Obestatin, human
Obestatin, rat, mouse
Octaneuropeptide
Octreotide Acetate
Opioid receptor antagonist
Orexin A, bovine, human, mouse, rat
Orexin B, canine
Orexin B, human
Orexin B, rat, mouse
Orn8, Urotensin II, human
Orphanin FQ, (Nociceptin)
Osteocalcin (1-49) (human)
Osteocalcin (37-49) (human)
Osteocalcin (45-49) (human)
Osteocalcin (7-19) (human)
Osteogenic Growth Peptide
Osteostatin (human)
Osteostatin (1-5) (human, bovine, dog, horse, mouse, rabbit, rat)
Osteostatin (1-5) amide (human, bovine, dog, horse, mouse, rabbit, rat)
Osteostatin amide (human)
OV - 1, Sheep
OV - 2, Sheep
Ovalbumin(257-264) antigen peptide
OVA Peptide
OVA(323-339)
Oxyntomodulin (human, mouse, rat)
Oxytocin