bis(5-[2-(tert-butylamino)-1-hydroxyethyl]benzene-1,3-diol);sulfuric acid; 2-tert-Butylamino-1-(3,5-dihydroxyphenyl)ethanol Hemisulfate; Brethaire; Brethine; 1,3-Benzenediol, 5-[2-[(1,1-dimethylethyl)amino]-1-hydroxyethyl]-, sulfate (2:1); Terbutalin sulfate; (±)-Terbutaline hemisulfate; 5-(2-(tert-butylamino)-1-hydroxyethyl)benzene-1,3-diol Hemisulfate