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HMR 1556 is a chromanol-derived IKs (slow delayed rectifier potassium current) blocker used in cardiac electrophysiology research. It displays low-nanomolar potency in isolated ventricular myocytes and is supplied in solution or solid forms for laboratory use.
Potent IKs blocker with low-nanomolar IC50s.
Chromanol derivative selective for the slowly activating potassium current.
Supplied as a 10 mM solution in DMSO or as solid material for flexible dosing.
High reported purity suitable for research applications.