S 332 is an adrenergic beta3-agonist that is more potent in increasing the urinary storage volume than clenbuterol and less potent in inhibiting the contractile force of urinary bladder at micturition reflex than clenbuterol.
Coumarin boronic acid (CBA) is a fluorescent probe that can be used to detect peroxynitrite , hypochlorous acid, and hydrogen peroxide.It reacts with peroxynitrite at an exponentially faster rate (k = 1.1 μM s) than hydrogen peroxide (k =1.5 M s) and moderately faster rate than hypochlorous acid. Peroxynitrite oxidizes CBA into the fluorescent product 7-hydroxycoumarin (COH), which displays excitation emission maxima of 332 470 nm, respectively.