Selective blocker of KCa1.1/BK channels
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Iberiotoxin (trifluoroacetate salt)

Item No. 14608

Product Insert (PDF)Safety Data Sheet (SDS) (PDF)
Technical Information
CAS Number
182897-30-9
Formula Weight
4230.9
Purity
≥95%
Formulation (Request formulation change)
A solid
Solubility(Learn about Variance in Solubility)
Water: Soluble
SMILES
[H]N(C(C1CCC(N1)=O)=O)[C@H](C(N[C@]([C@@H](C)O)([H])C(N[C@H](C(N[C@@H](C(C)C)C(N[C@H](C(N[C@H](C(N[C@@H](CO)C(N[C@@H](C(C)C)C(N[C@@H](CO)C(N[C@@H](CCCCN)C(N[C@@H](CCC(O)=O)C(N[C@H](C(N[C@H](C(N[C@@H](CO)C(N[C@@H](C(C)C)C(N[C@H](C(N[C@@H](CCCCN)C(N[C@H](C(N[C@@H](CC(C)C)C(N[C@H](C(NCC(N[C@@H](C(C)C)C(N[C@H](C(N[C@@H](CCCNC(N)=N)C(NCC(N[C@@H](CCCCN)C2=O)=O)=O)=O)CC(O)=O)=O)=O)=O)CC3=CC=CC=C3)=O)=O)CC(O)=O)=O)=O)CSSC[C@H](N4)C(N[C@H](C(N[C@@H](CCC(N)=O)C(O)=O)=O)CC5=CC=C(O)C=C5)=O)=O)=O)=O)CC6=CNC7=C6C=CC=C7)=O)CSSC[C@H](N8)C(N[C@@H](CCCNC(N)=N)C4=O)=O)=O)=O)=O)=O)=O)=O)CSSC[C@H](N2)C(N[C@H](C(NCC(N[C@@H](CCCCN)C(N[C@@H](CCCCN)C8=O)=O)=O)=O)CCSC)=O)=O)CC(O)=O)=O)=O)CC(O)=O)=O)=O)CC9=CC=CC=C9.FC(F)(C(O)=O)F
InChi Code
InChI=1S/C179H274N50O55S7.C2HF3O2/c1-87(2)65-111-155(261)208-112(66-93-33-15-13-16-34-93)146(252)195-77-133(239)225-139(88(3)4)172(278)213-117(71-136(244)245)158(264)199-100(44-31-62-190-178(186)187)144(250)193-75-131(237)198-102(40-22-27-58-181)148(254)219-124-82-287-290-85-127(223-160(266)118(72-137(246)247)214-173(279)140(89(5)6)226-162(268)119(73-138(248)249)215-176(282)143(92(11)233)229-161(267)114(67-94-35-17-14-18-36-94)209-153(259)107-51-54-130(236)196-107)171(277)217-122(80-232)165(271)227-141(90(7)8)174(280)218-120(78-230)163(269)201-103(41-23-28-59-182)149(255)204-108(52-55-134(240)241)154(260)222-126-84-288-286-81-123(220-151(257)105(43-25-30-61-184)200-147(253)101(39-21-26-57-180)197-132(238)76-194-145(251)109(56-64-285-12)205-167(124)273)166(272)203-106(45-32-63-191-179(188)189)152(258)221-125(169(275)210-113(68-95-46-48-97(234)49-47-95)156(262)206-110(177(283)284)50-53-129(185)235)83-289-291-86-128(168(274)202-104(42-24-29-60-183)150(256)212-116(70-135(242)243)159(265)207-111)224-175(281)142(91(9)10)228-164(270)121(79-231)216-157(263)115(211-170(126)276)69-96-74-192-99-38-20-19-37-98(96)99;3-2(4,5)1(6)7/h13-20,33-38,46-49,74,87-92,100-128,139-143,192,230-234H,21-32,39-45,50-73,75-86,180-184H2,1-12H3,(H2,185,235)(H,193,250)(H,194,251)(H,195,252)(H,196,236)(H,197,238)(H,198,237)(H,199,264)(H,200,253)(H,201,269)(H,202,274)(H,203,272)(H,204,255)(H,205,273)(H,206,262)(H,207,265)(H,208,261)(H,209,259)(H,210,275)(H,211,276)(H,212,256)(H,213,278)(H,214,279)(H,215,282)(H,216,263)(H,217,277)(H,218,280)(H,219,254)(H,220,257)(H,221,258)(H,222,260)(H,223,266)(H,224,281)(H,225,239)(H,226,268)(H,227,271)(H,228,270)(H,229,267)(H,240,241)(H,242,243)(H,244,245)(H,246,247)(H,248,249)(H,283,284)(H4,186,187,190)(H4,188,189,191);(H,6,7)/t92-,100+,101+,102+,103+,104+,105+,106+,107?,108+,109+,110+,111+,112+,113+,114+,115+,116+,117+,118+,119+,120+,121+,122+,123+,124+,125+,126+,127+,128+,139+,140+,141+,142+,143+;/m1./s1
InChi Key
ZDGJIMQFDSPUJP-XYHSBZLHSA-N
Shipping & Storage Information
Storage
-80°C
Shipping
Dry ice in continental US; may vary elsewhere
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Certificates of Analysis & Batch Specific Data

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    100 µg

    $472

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    Product Description

    Iberiotoxin, a peptide purified from venom of the scorpion B. tamulus, is a selective blocker of large-conductance calcium-activated potassium channels (KCa1.1/BKCa). In single channel recordings, iberiotoxin can reversibly block outward currents mediated by KCa1.1 in excised membrane patches from bovine aortic smooth muscle with an IC50 value of 250 pM.1 It is also a noncompetitive, partial inhibitor of charybdotoxin binding in bovine aortic sarcolemmal membrane vesicles (Ki = 250 pM).1

    WARNING This product is not for human or veterinary use.

    References & Product Citations
    Product Description References

    1. Galvez, A., Gimenez-Gallego, G., Reuben, J.P., et al. Purification and characterization of a unique, potent, peptidyl probe for the high conductance calcium-activated potassium channel from venom of the scorpion Buthus tamulus. The Journal of Biological Chemisty 265(19), 11083-11090 (1990).