FIELD: organic chemistry. SUBSTANCE: new chemical compound: 1-(4-hydroxy-3-hydroxymethylphenyl)-2- -tert. -butylamino)-ethanol hemisuccinate of the formula given in description. Compound is synthesized by the known method - by interaction of equimolar amounts of 1-(4-hydroxy-3-hydroxymethylphenyl)-2-(tert. -butyl- -amino)-ethanol and succinic acid. In animal experiments this compound shows high tocolytic activity and low toxicity. Based on this compound the following compositions were obtained: for parenteral administration - an aqueous solution containing from 0.05-1.0% to 10-30% succinic acid with respect to active component. For oral using - tablets containing 2-6 mg active component and 10-80 mg succinic acid. EFFECT: improved method of synthesis, enhanced quality and effectiveness. 3 cl, 8 tbl
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