Calcitonin (salmon) (trifluoroacetate salt)

Calcitonin is a peptide hormone that lowers blood calcium level and inhibits bone resorption. It belongs to the calcitonin family of peptides, which also includes amylin (Cay-24274), calcitonin gene-related peptide (Cay-24405), and adrenomedullin. The binding of salmon calcitonin to the human calcitonin receptor (CTR) is not modulated by receptor activity-modifying proteins (RAMPs), which influence affinity of human calcitonin (Cay-24409) to CTR. Salmon calcitonin binds to human CTR2 with IC50 values of 0.933, 0.224, 0.134, and 0.317 nM alone and with RAMP1, 2, or 3, respectively. It induces cAMP accumulation in COS-7 cells transfected with CTR2 (EC50 = 0.166 nM). Salmon calcitonin inhibits bone resorption by osteoclasts in a pit formation assay using rat bone slices (ID50 = 0.003 pg/mL) and lowers calcium level in vivo in a bioassay of hypocalcemia in rats (ED15 = 33.9 mg/kg). Formulations containing salmon calcitonin have been used to treat hypercalcemia, bone destruction by osteoporosis, and Paget's disease.Formal Name: L-cysteinyl-L-seryl-L-asparaginyl-L-leucyl-L-seryl-L-threonyl-L-cysteinyl-L-valyl-L-leucylglycyl-L-lysyl-L-leucyl-L-seryl-L-glutaminyl-L-alpha-glutamyl-L-leucyl-L-histidyl-L-lysyl-L-leucyl-L-glutaminyl-L-threonyl-L-tyrosyl-L-prolyl-L-arginyl-Lthreonyl-L-asparaginyl-L-threonylglycyl-L-serylglycyl-L-threonyl-L-prolinamide, cyclic (1->7)-disulfide, trifluoroacetate salt. CAS Number: 171052-37-2. Synonyms: Calcitonin (1-32) (salmon), Salcatonin, sCT, Thyrocalcitonin (salmon). Molecular Formula: C145H240N44O48S2 . XCF3COOH. Formula Weight: 3431.9. Purity: >95%. Formulation: (Request formulation change), A lyophilized powder. Solubility: Water: 1 mg/ml. SMILES: NC([C@@H]1CCCN1C([C@@]([C@@H](C)O)([H])NC(CNC([C@H](CO)NC(CNC([C@@]([C@@H](C)O)([H])NC([C@H](CC(N)=O)NC([C@@]([C@@H](C)O)([H])NC([C@H](CCCNC(N)=N)NC([C@@H]2CCCN2C([C@@H](NC([C@@]([C@@H](C)O)([H])NC([C@H](CCC(N)=O)NC([C@H](CC(C)C)NC([C@H](CCCCN)NC([C@@H](NC([C@H](CC(C)C)NC([C@H](CCC(O)=O)NC([C@H](CCC(N)=O)NC([C@H](CO)NC([C@H](CC(C)C)NC([C@H](CCCCN)NC(CNC([C@H](CC(C)C)NC([C@H](C(C)C)NC([C@@H](N3)CSSC[C@H](N[H])C(N[C@@H](CO)C(N[C@@H](CC(N)=O)C(N[C@@H](CC(C)C)C(N[C@@H](CO)C(N[C@]([C@@H](C)O)([H])C3=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)CC4=CN=CN4)=O)=O)=O)=O)=O)CC5=CC=C(O)C=C5)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O.FC(F)(C(O)=O)F. InChi Code: InChI=1S/C145H240N44O48S2.C2HF3O2/c1-65(2)45-86(175-139(232)110(70(11)12)183-136(229)99-63-239-238-62-79(148)117(210)178-96(59-191)134(227)174-92(52-104(151)202)131(224)172-90(49-69(9)10)129(222)180-98(61-193)135(228)187-114(74(16)197)142(235)181-99)118(211)158-55-106(204)162-80(25-18-20-40-146)120(213)169-89(48-68(7)8)128(221)179-97(60-192)133(226)167-83(34-37-102(149)200)122(215)165-85(36-39-109(207)208)123(216)171-88(47-67(5)6)127(220)173-91(51-77-54-156-64-161-77)130(223)164-81(26-19-21-41-147)121(214)170-87(46-66(3)4)126(219)166-84(35-38-103(150)201)125(218)186-113(73(15)196)141(234)177-94(50-76-30-32-78(199)33-31-76)143(236)189-44-24-29-101(189)137(230)168-82(27-22-42-157-145(154)155)124(217)185-112(72(14)195)140(233)176-93(53-105(152)203)132(225)184-111(71(13)194)138(231)160-56-107(205)163-95(58-190)119(212)159-57-108(206)182-115(75(17)198)144(237)188-43-23-28-100(188)116(153)209,3-2(4,5)1(6)7/h30-33,54,64-75,79-101,110-115,190-199H,18-29,34-53,55-63,146-148H2,1-17H3,(H2,149,200)(H2,150,201)(H2,151,202)(H2,152,203)(H2,153,209)(H,156,161)(H,158,211)(H,159,212)(H,160,231)(H,162,204)(H,163,205)(H,164,223)(H,165,215)(H,166,219)(H,167,226)(H,168,230)(H,169,213)(H,170,214)(H,171,216)(H,172,224)(H,173,220)(H,174,227)(H,175,232)(H,176,233)(H,177,234)(H,178,210)(H,179,221)(H,180,222)(H,181,235)(H,182,206)(H,183,229)(H,184,225)(H,185,217)(H,186,218)(H,187,228)(H,207,208)(H4,154,155,157),(H,6,7)/t71-,72-,73-,74-,75-,79+,80+,81+,82+,83+,84+,85+,86+,87+,88+,89+,90+,91+,92+,93+,94+,95+,96+,97+,98+,99+,100+,101+,110+,111+,112+,113+,114+,115+,/m1./s1. InChi Key: GYTJOAZTZPTMIF-LXQLIYPUSA-N.