Oxybutynin (chloride) (Standard) is the analytical standard of Oxybutynin (chloride). This product is intended for research and analytical applications. 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, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.