UCL 1684 (dibromide) is a first nanomolar, non-peptidic small conductance calcium-activated potassium (SK) channel blocker. UCL 1684 (dibromide) is effective in preventing the development of atrial fibrillation due to potent atrial-selective inhibition of INa. UCL 1684 (dibromide) causes atrial-selective prolongation of ERP secondary to induction of postrepolarization refractoriness.

Levosimendan D3 (Simsndan D3) is a deuterium labeled Levosimendan. Levosimendan is a calcium sensitiser used in the management of acutely decompensated congestive heart failure.

Nifekalant hydrochloride (MS-551), a class III antiarrhythmic agent, is a IKr potassium channel blocker with an IC50 of 10 µM. Nifekalant hydrochloride can be used for refractory ventricular tachyarrhythmias research.

Lei-Dab7 is a high affinity, selective KCa2.2 (SK2) channel blocker (Kd=3.8 nM). Lei-Dab7 exhibits >200-fold selectivity for KCa2.2 over KCa2.1, KCa2.3, KCa3.1, Kv and Kir2.1. Lei-Dab7 increases theta-burst responses and increases LTP in rat hippocampal slices in vitro.

Quinidine hydrochloride monohydrate is an anti-arrythmic agent and a potent potassium channel inhibitor with IC50 of 19.9 μM.

L-Palmitoylcarnitine chloride, a long-chain acylcarnitine and a fatty acid metabolite, accumulates in the sarcolemma and deranges the membrane lipid environment during ischaemia. L-Palmitoylcarnitine chloride inhibits KATP channel activity, without affecting the single channel conductance, through interaction with Kir6.2.

Spadin TFA, a natural peptide derived from a propeptide released in blood, is able to block the TREK-1 (KCNK2 or K2P2.1) channel activity. Spadin TFA binds specifically to TREK-1 with an affinity of 10 nM. Spadin TFA is an efficient antidepressant in mice.

Spadin, a natural peptide derived from a propeptide released in blood, is able to block the TREK-1 (KCNK2 or K2P2.1) channel activity. Spadin binds specifically to TREK-1 with an affinity of 10 nM. Spadin is an efficient antidepressant in mice.

Agitoxin-2 TFA is a K+ channel inhibitor, with IC50 values of 201 pM and 144 pM for mKV1.3 and mKV1.1, respectively).

Agitoxin-2 is a K+ channel inhibitor, with IC50 values of 201 pM and 144 pM for mKV1.3 and mKV1.1, respectively).

ShK-Dap22 TFA is a potent Kv1.3-specific immunosuppressive Polypeptide. ShK-Dap22 TFA is a selective Kv1.3 channel blocker with IC50s of 23 pM, 1.8 nM, 10.5 nM, 37 nM, and 39 nM for mKv1.3, mKv1.1, hKv1.6, mKv1.4, and rKv1.2 channels, respectively.

ShK-Dap22 is a potent Kv1.3-specific immunosuppressive Polypeptide. ShK-Dap22 is a selective Kv1.3 channel blocker with IC50s of 23 pM, 1.8 nM, 10.5 nM, 37 nM, and 39 nM for mKv1.3, mKv1.1, hKv1.6, mKv1.4, and rKv1.2 channels, respectively.

Charybdotoxin TFA, a 37-amino acid peptide isolated from venom of the scorpion Leiurus quinquestriatus var. hebraeus, is a K+ channel blocker.

O-Nornuciferine, an aporphine-type alkaloid from lotus leaf, is a potent hERG channel inhibitor.

Isopimaric acid is a potent opener of large conductance calcium activated K+ (BK) channels.

Cloperastine hydrochloride inhibits the hERG K+ currents in a concentration-dependent manner with an IC50 value of 27 nM.

Tetraethylammonium chloride is a non-selective potassium channel blocker. Tetraethylammonium chloride is a good substrate for organic cation transporter (OCTN1). Tetraethylammonium chloride antitumor properties.

2,2,2-Trichloroethanol, the active form of the sedative hypnotic drug chloral hydrate, is an agonist for the nonclassical K2P channels TREK-1 (KCNK2) and TRAAK (KCNK4).

5-Hydroxydecanoate sodium is a selective ATP-sensitive K+ (KATP) channel blocker (IC50 of ~30 μM). 5-Hydroxydecanoate sodium is a substrate for mitochondrial outer membrane acyl-CoA synthetase and has antioxidant activity.

Dihydroisopimaric acid activates large conductance Ca2+ activated K+ (BK) channels alphabeta1 in the direct measurement of BKalphabeta1 opening under whole-cell voltage clamp.

AMP-PNP tetralithium (Adenylyl-imidodiphosphate tetralithium) is a non-hydrolysable analogue of ATP and inhibits KATP channels.

VU0463271 quarterhydrate is a potent KCC2 antagonist, with an IC50 of 61 nM.

Dehydrosoyasaponin I (Soyasaponin Be;DHS-I), a triterpene glycoside, is a potent and reversible calcium-activated potassium (maxi-K) channels activator.

Chlorahololide C, a lindenane sesquiterpenoid dimer, is isolated from Chloranthus holostegius. Chlorahololide C is a potent and selective potassium channel blocker, with an IC50 of 3.6 μM.

(±)-Naringenin is a naturally-occurring flavonoid. (±)-Naringenin displays vasorelaxant effect on endothelium-denuded vessels via the activation of BKCa channels in myocytes.

OR-1896 is an active long-lived metabolite of Levosimendan. OR-1896 is a highly selective phosphodiesterase (PDE) III isoform inhibitor and a powerful vasodilator. OR-1896 can open ATP-sensitive K+ channels and has Ca2+-sensitizing effect. OR-1896 mitigates cardiomyocyte apoptosis, cardiac remodeling and myocardial inflammation.

Ethyl tosylcarbamate is an intermediate in the synthesis of Gliclazide (G409877). Gliclazide is a whole-cell beta-cell ATP-sensitive potassium currents blocker with an IC50 of 184 nM.

Dibutyryl-cGMP sodium (Bt2cGMP sodium) is a cell-permeable cGMP analogue. Dibutyryl-cGMP sodium preferentially activates cGMP-dependent protein kinase (PKG). Dibutyryl-cGMP sodium inhibits the release of [3H]-arachidonic acid from γ thrombin-stimulated human platelets. Dibutyryl-cGMP sodium induces peripheral antinociception via activation of ATP-sensitive K+ channels.

Tifenazoxide (NN414) is a potent, orally active and SUR1/Kir6.2 selective KATP channels opener. Tifenazoxide has antidiabetic effect, can inhibit glucose stimulated insulin release in vitro and in vivo, and has a beneficial effect on glucose homeostasis.

VU041 is a first submicromolar-affinity inhibitor of Anopheles (An.) gambiae and Aedes (Ae.) aegypti inward rectifier potassium 1 (Kir1) channels with IC50 values of 2.5 μM and 1.7 μM, respectively. VU041 inhibits appreciably is mammalian Kir2.1 (IC50 of 12.7 μM), and has less inhibitory effect on mammalian Kir1.1, Kir4.1, Kir6.2/SUR1, and Kir7.1. VU041 also induces impaired Malpighian tubule function.