(R,R)-Solifenacin HCl ; 

(1R)-3,4-Dihydro-1-phenyl-2(1H)-isoquinolinecarboxylic acid (3R)-1-azabicyclo-[2.2.2]oct-3-yl ester HCl ;

CAS # 862207-70-3 (succinate salt) ; 740780-79-4 (base) ;

C23H27ClN2O2 ;

MW: 398.93 ;

Supplied as HCl salt ;