Cat. No. 2533
Alternative Name: Diphenyl phosphine oxide-1
Chemical Name: [1S-(1α,2α,5β)]-[5-Methyl-2-(1-methyle
Biological ActivityBlocker of IKur ultrarapid delayed rectifier potassium current and KV1.5 channels (IC50 = 0.31 μM for rKV1.5). Displays selectivity for inhibition of IKur over Ito (8-fold), IK1, IKr and IKs (20-fold) in native myocytes and selectivity for rat recombinant KV1.5 over KV3.1 (~ 15-fold). Increases action potential duration in atrial but not ventricular myocytes and prevents atrial arrhythmia.
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.
Certificate of Analysis / Product Datasheet / Safety Datasheet
References are publications that support the products' biological activity.
Lagrutta et al (2006) Novel, potent inhibitors of human Kv1.5 K+ channels and ultrarapid activating delayed rectifier potassium current. J.Pharmacol.Exp.Ther. 317 1054. PMID: 16522807.
Regan et al (2006) In vivo cardiac electrophysiologic effects of a novel diphenylphosphine oxide IKur blocker, (2-isopropyl-5-methylcyclohexyl) diphenylphosphine oxide, in rat and nonhuman primate. J.Pharmacol.Exp.Ther. 316 727. PMID: 16243963.
Stump et al (2005) In vivo antiarrhythmic and cardiac electrophysiologic effects of a novel diphenylphosphine oxide IKur blocker (2-isopropyl-5-methylcyclohexyl) diphenylphosphine oxide. J.Pharmacol.Exp.Ther. 315 1362. PMID: 16157659.
If you know of a relevant reference for DPO-1 please let us know.
Citations are publications that use Tocris products. Selected citations for DPO-1 include:
Tabarean (2014) Electrical remodeling of preoptic GABAergic neurons involves the Kv1.5 subunit. Pharmacol Res Perspect 9 e96643. PMID: 24797243.
Zhao et al (2013) Potent suppression of Kv1.3 potassium channel and IL-2 secretion by diphenyl phosphine oxide-1 in human T cells. PLoS One 8 e64629. PMID: 23717641.
Haim et al (2010) Palmitate attenuates myocardial contractility through augmentation of repolarizing Kv currents. J Mol Cell Cardiol 48 395. PMID: 19857498.
Do you know of a great paper that uses DPO-1 from Tocris? If so please let us know.
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Keywords: DPO-1, supplier, blockers, KV15, channel, IKur, current, Potassium, KV, Channels, voltage-gated, voltage-dependent, K+, Diphenylphosphine, oxide1, Tocris Bioscience, Voltage-gated Potassium (KV) Channel Blocker products
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