Calcitonin-13C6,15N4 (salmon) (TFA)

O=C(O)C(F)(F)F.O=C(O)C(F)(F)F.O=C(O)C(F)(F)F.O=C(O)C(F)(F)F.OC1=CC=C(C[C@@H](C(N2[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(NCC(N[C@H](C(NCC(N[C@H](C([15N]3[13C@H]([13C](N)=O)[13CH2][13CH2][13CH2]3)=O)[C@@H](C)O)=O)=O)CO)=O)=O)[C@@H](C)O)=O)CC(N)=O)=O)[C@@H](C)O)=O)CCCNC(N)=N)=O)CCC2)=O)NC([C@@H](NC([C@@H](NC([C@@H](NC([C@@H](NC([C@H](CC4=CN=CN4)NC([C@@H](NC([C@@H](NC([C@@H](NC([C@@H](NC([C@@H](NC([C@@H](NC(CNC([C@@H](NC([C@@H](NC([C@H]5NC([C@]([H])([C@@H](C)O)NC([C@H](CO)NC([C@H](CC(C)C)NC([C@H](CC(N)=O)NC([C@H](CO)NC([C@@H](N)CSSC5)=O)=O)=O)=O)=O)=O)=O)C(C)C)=O)CC(C)C)=O)=O)CCCCN)=O)CC(C)C)=O)CO)=O)CCC(N)=O)=O)CCC(O)=O)=O)CC(C)C)=O)=O)CCCCN)=O)CC(C)C)=O)CCC(N)=O)=O)[C@@H](C)O)=O)C=C1.O=C(O)C(F)(F)F

[1]Feigh M, et al. Oral salmon calcitonin attenuates hyperglycaemia and preserves pancreatic beta-cell area and function in Zucker diabetic fatty rats. Br J Pharmacol. 2012 Sep;167 (1) :151-63.