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Sematilide hydrochloride

Cat. No. M8906
Sematilide hydrochloride Structure

CK-1752 hydrochloride

Size Price Availability
10mg USD 250 1-2 Weeks
50mg USD 550 1-2 Weeks
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Quality Control
  • Current batch:
  • Purity >98%
  • COA
  • MSDS
Biological Activity

Sematilide (CK-1752) hydrochloride is a novel class III antiarrhythmic agent. Sematilide inhibits the rapidly activating delayed rectifier K+ current. The Ca2+-independent transient K+ and the inward rectifier K+ currents were not affected significantly by application of 100 microM sematilide. Moreover, voltage-dependent Na+ and Ca2+ currents were not affected significantly by 100 microM sematilide.

These findings indicate that sematilide selectively blocks the rapidly activating delayed rectifier K+ current in atrial myocytes and provide evidence supporting the usefulness of the drug as a class III antiarrhythmic agent. Application of 10, 30, 100 and 300 microM sematilide caused a concentration-dependent inhibition of the delayed rectifier K+ current (IC50 approx. 25 microM).

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Chemical Information
Molecular Weight 349.87
Formula C14H24ClN3O3S
CAS Number 101526-62-9
Purity >98%
Solubility DMSO
Storage at -20°C

Effects of sematilide, a novel class III antiarrhythmic agent, on membrane currents in rabbit atrial myocytes.
Ishii Y, et al. Eur J Pharmacol. 1997 Jul 23;331(2-3):295-302. PMID: 9274992.

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Keywords: Sematilide hydrochloride, CK-1752 hydrochloride supplier, inhibitors

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