Ball-and-stick model of clenbuterol — a long-acting β2 adrenoreceptor agonist (LABA) used in the management of asthma, COPD and as tocolytic to prevent premature birth. "Clenbuterol is a racemic mixture, ("R")-(−)-enantiomer is portrayed." Created using Accelrys DS Visualizer 4.1 and Adobe Photoshop CC 2015.