A6[(tert-Butylamino)methyl]-3-hydroxy-2,6-pyridine-dimethanol;a selective b2-adrenergic bronchodilator used in the treatment of asthma. ... (05 Mar 2000) ... 
(pir-bu´tәr-ol) a beta2-adrenergic receptor agonist, administered by oral inhalation in the form of the acetate ester as a bronchodilator.