UCL 1684

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Cat.No. 1310 - UCL 1684 | C34H30Br2N4 | CAS No. 199934-16-2
Description: Highly potent KCa2 (SK) channel blocker
Chemical Name: 6,12,19,20,25,26-Hexahydro-5,27:13,18:21,24-trietheno-11,7-metheno-7H-dibenzo [b,n] [1,5,12,16]tetraazacyclotricosine-5,13-diium dibromide
Purity: ≥97% (HPLC)
Citations (13)
Literature (2)

Biological Activity

Highly potent, non-peptidic blocker of the apamin-sensitive Ca2+-activated K+ channel (KCa2.1) (IC50 = 3 nM in rat sympathetic neurons). Blocks hKCa2.1 and rKCa2.2 channels expressed in HEK 293 cells with IC50 values of 762 and 364 pM respectively.

Licensing Information

Sold with the permission of University College, London

Technical Data

M. Wt 654.44
Formula C34H30Br2N4
Storage Desiccate at RT
Purity ≥97% (HPLC)
CAS Number 199934-16-2
PubChem ID 9852584
Smiles C12=CC=CC=C1C(NCC4=CC=C(CNC5=CC=[N+]7C6=C5C=CC=C6)C=C4)=CC=[N+]2CC3=CC=CC(C7)=C3.[Br-].[Br-]

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

Tocris products are intended for laboratory research use only, unless stated otherwise.

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
DMSO 7.21 10

Preparing Stock Solutions

The following data is based on the product molecular weight 654.44. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
0.1 mM 15.28 mL 76.4 mL 152.8 mL
0.5 mM 3.06 mL 15.28 mL 30.56 mL
1 mM 1.53 mL 7.64 mL 15.28 mL
5 mM 0.31 mL 1.53 mL 3.06 mL

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Product Datasheets

Certificate of Analysis / Product Datasheet
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References are publications that support the biological activity of the product.

Campos Rosa et al (2000) Synthesis, molecular modeling, and pharmacological testing of bis-quinolinium cyclophanes: potent, non-peptidic blockers of the apamin-sensitive Ca2+-activated K+ channel. J.Med.Chem. 43 420 PMID: 10669569

Malik-Hall et al (2000) Compounds that block intermediate-conductance (IKCa) and small-conductance (SKCa) calcium-activated potassium channels. Br.J.Pharmacol. 129 1431 PMID: 10742299

Strobaek et al (2000) Pharmacological characterization of small-conductance Ca2+-activated K+ channels stably expressed in HEK 293 cells. Br.J.Pharmacol. 129 991 PMID: 10696100

If you know of a relevant reference for UCL 1684, please let us know.

View Related Products by Product Action

View all Calcium-Activated Potassium (KCa) Channel Blockers

Keywords: UCL 1684, UCL 1684 supplier, potent, blockers, SKCa, Potassium, Channels, K+, ca2+-activated, ca2+-dependent, SK1, SK2, UCL1684, Ca2+-Activated, 1310, Tocris Bioscience

13 Citations for UCL 1684

Citations are publications that use Tocris products. Selected citations for UCL 1684 include:

Abdulkareem et al (2016) Knockdown of the small conductance Ca(2+) -activated K(+) channels is potently cytotoxic in breast cancer cell lines. Heart Rhythm 173 177 PMID: 26454020

Kurahashi et al (2014) Platelet-derived growth factor receptor-α-positive cells and not smooth muscle cells mediate purinergic hyperpolarization in murine colonic muscles. Am J Physiol Cell Physiol 307 C561 PMID: 25055825

Geier et al (2011) Dynamic interplay of excitatory and inhibitory coupling modes of neuronal L-type calcium channels. Am J Physiol Cell Physiol 300 C937 PMID: 21228322

Hilgers et al (2010) Twenty-four-hour exposure to altered blood flow modifies endothelial Ca2+-activated K+ channels in rat mesenteric arteries. J Pharmacol Exp Ther 333 210 PMID: 20040579

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Literature in this Area

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