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Oxybutynin chloride is administered as a racemate of R-and S-enantiomers. Chemically, oxybutynin chloride is d,l (racemic) 4-diethylamino-2-butynyl phenylcyclohexylglycolate hydrochloride. The empirical formula of oxybutynin chloride is C 22 H 31 NO 3 â¢HCl. Its structural formula is: Oxybutynin chloride is a white crystalline solid with a molecular weight of 393.9. It is readily soluble in water and acids, but relatively insoluble in alkalis.
When prescribing medications for urge incontinence, physicians must decide which agent to use. One option is oxybutynin, a nonselective anticholinergic agent available in short-and long-acting oral forms (Ditropan) and as a transdermal patch (Oxytrol).ntil further research in primary care settings is performed, there is little evidence to guide family physicians in the choice of anticholinergic medications for urge incontinence. Cost is not an important factor; prices for all of these agents are similar (Table 4) .