| abstract |
A pharmaceutically acceptable aqueous solution comprising a racemic mixture of (4- methylbenzenesulfonate of (R) -3 - ((S) -2-cyclopentyl-2-hydroxy-2-phenylacetoxy) -1,1-dimethylpyrrolidinium and 4- methylbenzenesulfonate of (S) -3 - ((R) -2-cyclopentyl-2-hydroxy-2-phenylacetoxy) -1,1-dim ethylpyrrolidinium or a solvate thereof, ethanol and at least one pharmaceutically acceptable additive, wherein said additive It includes citric acid, sodium citrate, or a combination thereof as a regulatory solution. |