[C:1]([C@:3]1([OH:11])[CH:8]2[CH2:9][CH2:10][N:5]([CH2:6][CH2:7]2)[CH2:4]1)#[CH:2].C([C@@H]([C@H](C([O-])=O)O)O)([O-])=O.C(=O)([O-])[O-].[K+].[K+]>O>[C:1]([C@:3]1([OH:11])[CH:8]2[CH2:9][CH2:10][N:5]([CH2:6][CH2:7]2)[CH2:4]1)#[CH:2]15.6 g of (3R)-3-ethynyl-3-quinuclidinol +L-(+)-tartrate was dissolved in 150 ml of water and 20 g of anhydrous potassium carbonate was added little by little under stirring. The resulting crystal were collected by filtration, washed with water and then dried, to give 6.88 g of the title compound.
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