FIELD: organic chemistry, medicine.
SUBSTANCE: invention relates to a novel chemical compound, namely, to biologically active compound of the formula (I): 
possessing anti-arrhythmic activity and representing 5'-bromolappaconitine hydrobromide. Toxicity of this compound is by 4.8-fold less toxic as compared with analog used in medicinal practice and representing lappaconitine hydrobromide. Proposed compound possesses the expressed anti-arrhythmic activity in models with calcium chloride and adrenaline arrhythmia and provides the complete blocking both types of arrhythmia after administration of the dose that is 10-fold less of the therapeutic dose of lappaconitine hydrobromide.
EFFECT: improved and valuable medicinal properties of compound.
2 cl, 2 tbl, 4 ex
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