Biotin-(Cys1,Lys(biotinyl)18)-Calcitonin (human) (AA:Biotin-Cys-Gly-Asn-Leu-Ser-Thr-Cys-Met-Leu-Gly-Thr-Tyr-Thr-Gln-Asp-Phe-Asn-Lys(bio)-Phe-His-Thr-Phe-Pro-Gln-Thr-Ala-Ile-Gly-Val-Gly-Ala-Pro-NH2 (Disulfide bridge: Cys1-Cys6)) (MW: 3870.52)