HMR 1556
Chemical Name: N-[(3R,4S)-3,4-Dihydro-3-hydroxy-2,2-dimethyl-6-(4,4,4-trifluorobutoxy)-2H-1-benzopyran-4-yl]-N-methylmetanesulfonamide
Purity: ≥98%
Biological Activity
HMR 1556 is a potent and selective Iks channel blocker (IC50 values are 10.5 and 34 nM in canine and guinea pig ventricular myocytes respectively). Selectively inhibits IKs currents over IKr, IKI, Ito and L-type Ca2+ channel currents. Also has little or no effect on Kv11.1 Kv1.5, Kv1.3, Kir2.1 and HCN2 channel currents. Potentiates E-4031-induced arrhythmias in vivo.Technical Data
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.
Background References
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Synthesis and activity of novel and selective I(Ks)-channel blockers.
Gerlach et al.
J.Med.Chem., 2001;44:3831 -
Potentiation of E-4031-induced torsade de pointes by HMR1556 or ATX-II is not predicted by action potential short-term variability or triangulation.
Michael et al.
Br.J.Pharmacol, 2007;152:1215 -
HMR 1556, a potent and selective blocker of slowly activating delayed rectifier potassium current.
Thomas et al.
J.Cardiovasc.Pharmacol., 2003;41:140
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