... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > pnictogen molecular entity > nitrogen molecular entity > ammonium compound > organoammonium salt > quaternary ammonium salt > butropium bromide

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > pnictogen molecular entity > nitrogen molecular entity > organonitrogen compound > quaternary nitrogen compound > quaternary ammonium salt > butropium bromide

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > heteroorganic entity > organonitrogen compound > quaternary nitrogen compound > quaternary ammonium salt > butropium bromide

... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > salt > halide salt > bromide salt > organic bromide salt > butropium bromide

... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > halide > halide salt > bromide salt > organic bromide salt > butropium bromide

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > halogen molecular entity > halide > halide salt > bromide salt > organic bromide salt > butropium bromide

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > halogen molecular entity > bromine molecular entity > bromide salt > organic bromide salt > butropium bromide

... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > salt > organic salt > organic halide salt > organic bromide salt > butropium bromide