elcatonin elcatonin elcatonin is a calcitonin derivative used as an anti-parathyroid agent. elcatoninclinical dataahfs/drugs.cominternational drug namesatc codeh05ba04 (who) identifierscas number60731-46-6pubchem cid16129700chemspider17294280uniiw0cms474jkkeggd03287echa infocard100.056.703 chemical and physical dataformulac148h244n42o47molar mass3363.827 g·mol−13d model (jsmol)interactive image smiles /n=c(/n)\nccc(c(=o)n((c)o)c(=o)n(cc(=o)o)c(=o)n(c(c)c)c(=o)ncc(=o)n(c)c(=o)ncc(=o)n((c)o)c(=o)n1ccc1c(=o)n)nc(=o)2cccn2c(=o)(cc3ccc(cc3)o)nc(=o)((c)o)nc(=o)(ccc(=o)n)nc(=o)(cc(c)c)nc(=o)(ccccn)nc(=o)(cc4ccn4)nc(=o)(cc(c)c)nc(=o)(ccc(=o)o)nc(=o)(ccc(=o)n)nc(=o)(co)nc(=o)(cc(c)c)nc(=o)(ccccn)nc(=o)cnc(=o)(cc(c)c)nc(=o)(c(c)c)nc(=o)5cccccc(=o)n(c(=o)n(c(=o)n(c(=o)n(c(=o)n(c(=o)n5)(c)o)co)cc(c)c)cc(=o)n)co inchi inchi=1s/c148h244n42o47/c1-69(2)52-91(178-142(232)115(75(13)14)185-127(217)86-30-21-20-22-36-108(202)165-100(65-191)137(227)177-97(59-107(153)201)135(225)175-95(56-73(9)10)133(223)182-102(67-193)139(229)188-116(77(16)194)143(233)171-86)122(212)160-63-110(204)164-84(31-23-25-47-149)123(213)172-94(55-72(7)8)132(222)181-101(66-192)138(228)169-88(41-44-105(151)199)125(215)167-90(43-46-112(206)207)126(216)174-93(54-71(5)6)131(221)176-96(58-82-61-157-68-162-82)134(224)166-85(32-24-26-48-150)124(214)173-92(53-70(3)4)130(220)168-89(42-45-106(152)200)129(219)187-118(79(18)196)145(235)180-99(57-81-37-39-83(198)40-38-81)146(236)190-51-29-35-104(190)140(230)170-87(33-27-49-158-148(155)156)128(218)186-117(78(17)195)144(234)179-98(60-113(208)209)136(226)184-114(74(11)12)141(231)161-62-109(203)163-76(15)121(211)159-64-111(205)183-119(80(19)197)147(237)189-50-28-34-103(189)120(154)210/h37-40,61,68-80,84-104,114-119,191-198h,20-36,41-60,62-67,149-150h2,1-19h3,(h2,151,199)(h2,152,200)(h2,153,201)(h2,154,210)(h,157,162)(h,159,211)(h,160,212)(h,161,231)(h,163,203)(h,164,204)(h,165,202)(h,166,224)(h,167,215)(h,168,220)(h,169,228)(h,170,230)(h,171,233)(h,172,213)(h,173,214)(h,174,216)(h,175,225)(h,176,221)(h,177,227)(h,178,232)(h,179,234)(h,180,235)(h,181,222)(h,182,223)(h,183,205)(h,184,226)(h,185,217)(h,186,218)(h,187,219)(h,188,229)(h,206,207)(h,208,209)(h4,155,156,158)/t76-,77+,78+,79+,80+,84-,85-,86-,87-,88-,89-,90-,91-,92-,93-,94-,95-,96-,97-,98-,99-,100-,101-,102-,103-,104-,114-,115-,116-,117-,118-,119-/m0/s1key:ddpfhdczujfnat-pzpwkvfesa-n (verify) elcatonin it is transformed from eel's calcitonin by changing the s-s bond into a stable c-n bond. it inhibits the absorption and autolysis of bones and thus leads to lowering of blood calcium. it inhibits bone salts from dissolving and transferring and promotes the excretion of calcium and phosphorus in the urine. it inhibits renal tubules reabsorbing calcium, phosphorus and sodium and keeps blood calcium at a normal level. it is mainly used for remitting or eliminating pain caused by osteoporosis.