solifenacin and its Impurities
A muscarinic receptor antagonist drug used for treating contraction of overactive bladder such as incontinence, urinary frequency, and urgency. Solifenacin is a competitive cholinergic receptor antagonist, selective for the M3 receptor subtype. It was manufactured and marketed by Astellas, GlaxoSmithKline and Teva Pharmaceutical Industries. Reference standards of Solifenacin API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


(S)-(1S,2R,3R,4S)-2-Ethylquinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate
(S)-(1S,2R,3R,4S)-2-Ethylquinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate
Catalogue No.:PA 19 50620
CAS :
605696-10-4
Molecular Formula : C25H30N2O2
Molecular Weight : 390.52


(1R,3R,4R)-3-((4-Hydroxy-1-phenyl-1,2,3,4-tetrahydroisoquinoline-2-carbonyl)oxy)quinuclidine 1-oxide
(1R,3R,4R)-3-((4-Hydroxy-1-phenyl-1,2,3,4-tetrahydroisoquinoline-2-carbonyl)oxy)quinuclidine 1-oxide
Catalogue No.:PA 19 50700
CAS :
NA
Molecular Formula : C23H26N2O4
Molecular Weight : 394.46


(R)-3-(((S)-1-Phenyl-1,2,3,4-tetrahydroisoquinoline-2-carbonyl)oxy)quinuclidine 1-oxide Fumarate
(R)-3-(((S)-1-Phenyl-1,2,3,4-tetrahydroisoquinoline-2-carbonyl)oxy)quinuclidine 1-oxide Fumarate
Catalogue No.:PA 19 50770
CAS :
NA
Molecular Formula : C27H30N2O7
Molecular Weight : 494.54


(1S,3R,4S)-Quinuclidin-3-yl (1S,4R)-4-hydroxy-1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate
(1S,3R,4S)-Quinuclidin-3-yl (1S,4R)-4-hydroxy-1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate
Catalogue No.:PA 19 0501001
CAS :
NA
Molecular Formula : C23H26N2O3
Molecular Weight : 378.47