Oxybutynin (chloride)

Oxybutynin chloride is an oral active and competitive mAChR antagonist with K_is of 14.3 and 5.55 nM for specific [³H]NMS binding in the mouse bladder and cerebral cortex, respectively. Oxybutynin chloride inhibits vascular Kv channels in a manner independent of anticholinergic effect, with an IC₅₀ value of 11.51 μM. Oxybutynin chloride reduces muscle spasm in the bladder and urinary tract, can be used in study of overactive bladder syndrome (OAB)^[1][2]. Oxybutynin (chloride) is a click chemistry reagent, itcontains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups. In Vitro: Oxybutynin chloride (0.1, 0.3, 1, 3, 10, 30, 100 μM; 200 ms) inhibits vascular Kv channels in a concentration-dependent manner independent of anticholinergic effect in coronary arterial smooth muscle cells^[1]. In Vivo: Oxybutynin chloride (27.2 mg/kg; p.o.; single) exhibits significant binding of mouse brain muscarinic receptors that about a 2-fold increase in K_d values for specific [³H]N-methylscopolamine binding 0.5 and 2 h later^[2].