Synonyms: 3-Oxa-9-azoniatricyclo[3.3.1.02,4]nonane,7-[(hydroxydi-2-thienylacetyl)oxy]-9,9-dimethyl-, bromide, (1a,2b,4b,5a,7b)- (9CI);(1a,2b,4b,5a,7b)-7-[(Hydroxydi-2-thienylacetyl)oxy]-9,9-di-methyl-3-oxa-9-azoniatricyclo[3.3.1.0]nonanebromide;BA 679BR;Spiriva;tiopropium;