Sotalol (Betapace) is a non-selective beta blocker and a potassium channel blocker with an IC50 of 43 µM. Sotalol definitely distinctly located binding site to interfere with K+ permeation; both enantiomers associated with a rate close to 5 ˟ 105 /mol/ sec with the open pore thereby flicker-blocking cardiac K (ATP) channels.
| Molecular Weight | 308.82 |
| Formula | C12H20N2O3S.HCl |
| CAS Number | 959-24-0 |
| Solubility (25°C) | DMSO 60 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| 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 Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 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 Compound A of 10 mg/kg.
[1] Nicholas Z Kerin. Intravenous Sotalol: An Under Used Treatment Strategy
[2] Rahul Samanta, et al. The Use of Intravenous Sotalol in Cardiac Arrhythmias
[4] J M Nappi, et al. Sotalol: a breakthrough antiarrhythmic?
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