FIELD: organic chemistry, pharmacy. SUBSTANCE: invention describes the novel compound, L-(-)-enantiomer bromide of (endo,syn)-(-)-3-(3-hydroxy-1-oxo-2-phenylpropoxy)- 8-methyl-8-(1-methylethyl)-8-azoniabicyclo-[3.2.1] -octane, with purity 90-100% but preferably 95-100%. This compound can be an active substance of inhalation preparation used for inhibition of bronchial spasm induced by acetylcholine that can contain usual accessory substances and/or carriers and/or other medicinal substances also. EFFECT: new compound indicated above, valuable medicinal properties. 2 cl, 1 dwg, 4 ex
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