tadalafil and its Impurities
Tadalafil is used to treat male erectile dysfunction. It is marketed worldwide under the brand name Cialis. Tadalafil is an orally administered drug.Reference standards of Tadalafil API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
(1R,3R)-Methyl 1-(benzo[d][1,3]dioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
(1R,3R)-Methyl 1-(benzo[d][1,3]dioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
Catalogue No.:PA 20 02550
CAS :
171489-59-1
Molecular Formula : C22H19ClN2O5
Molecular Weight : 426.85
(1R,3S)-Methyl 1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
(1R,3S)-Methyl 1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
Catalogue No.:PA 20 02560
CAS :
171596-44-4
Molecular Formula : C20H18N2O4
Molecular Weight : 350.37
(1S,3S)-1-(1,3-Benzodioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid Methyl Ester
(1S,3S)-1-(1,3-Benzodioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid Methyl Ester
Catalogue No.:PA 20 02570
CAS :
171596-43-3
Molecular Formula : C20H18N2O4
Molecular Weight : 350.37
(1S,3R)-Methyl 1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
(1S,3R)-Methyl 1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
Catalogue No.:PA 20 02580
CAS :
171596-42-2
Molecular Formula : C20H18N2O4
Molecular Weight : 350.37
(1S,3S)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid Methyl Ester
(1S,3S)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid Methyl Ester
Catalogue No.:PA 20 02590
CAS :
629652-42-2
Molecular Formula : C22H19ClN2O5
Molecular Weight : 426.85
(1S,3R)-1-Benzo[1,3]dioxol-5-yl-2-(2-chloro-acetyl)-2,3,4,9-tetrahydro-1H-b-carboline-3-carboxylic Acid Methyl Ester
(1S,3R)-1-Benzo[1,3]dioxol-5-yl-2-(2-chloro-acetyl)-2,3,4,9-tetrahydro-1H-b-carboline-3-carboxylic Acid Methyl Ester
Catalogue No.:PA 20 02600
CAS :
629652-40-0
Molecular Formula : C22H19ClN2O5
Molecular Weight : 426.85
(1R,3S)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid Methyl Ester
(1R,3S)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid Methyl Ester
Catalogue No.:PA 20 02610
CAS :
629652-44-4
Molecular Formula : C22H19ClN2O5
Molecular Weight : 426.85
(6R)-6-(Benzo[d][1,3]dioxol-5-yl)-2-methyl-7-((3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)-2,3,12,12a-tetrahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4(6H,7H)-dione
(6R)-6-(Benzo[d][1,3]dioxol-5-yl)-2-methyl-7-((3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)-2,3,12,12a-tetrahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4(6H,7H)-dione
Catalogue No.:PA 20 02660
CAS :
NA
Molecular Formula : C28H29N3O9
Molecular Weight : 551.54
(6R)-6-(Benzo[d][1,3]dioxol-5-yl)-7-((3R,4S,6R)-3,4-bis(2-hydroxypropoxy)-6-((2-hydroxypropoxy)methyl)-5-(((3R,4S,5S,6R)-3,4,5-tris(2-hydroxypropoxy)-6-((2-hydroxypropoxy)methyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)-2-methyl-2,3,12,12a-tetrahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4(6H,7H)-dione
(6R)-6-(Benzo[d][1,3]dioxol-5-yl)-7-((3R,4S,6R)-3,4-bis(2-hydroxypropoxy)-6-((2-hydroxypropoxy)methyl)-5-(((3R,4S,5S,6R)-3,4,5-tris(2-hydroxypropoxy)-6-((2-hydroxypropoxy)methyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)-2-methyl-2,3,12,12a-tetrahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4(6H,7H)-dione
Catalogue No.:PA 20 02670
CAS :
NA
Molecular Formula : C55H81N3O21
Molecular Weight : 1120.24
(6R)-6-(Benzo[d][1,3]dioxol-5-yl)-2-methyl-7-((3R,4S,5S,6R)-3,4,5-tris(2-hydroxypropoxy)-6-((2-hydroxypropoxy)methyl)tetrahydro-2H-pyran-2-yl)-2,3,12,12a-tetrahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4(6H,7H)-dione
(6R)-6-(Benzo[d][1,3]dioxol-5-yl)-2-methyl-7-((3R,4S,5S,6R)-3,4,5-tris(2-hydroxypropoxy)-6-((2-hydroxypropoxy)methyl)tetrahydro-2H-pyran-2-yl)-2,3,12,12a-tetrahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4(6H,7H)-dione
Catalogue No.:PA 20 02680
CAS :
NA
Molecular Formula : C40H53N3O13
Molecular Weight : 783.86
(6R)-6-(benzo[d][1,3]dioxol-5-yl)-2,7-dimethyl-2,3,12,12a-tetrahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4(6H,7H)-dione
(6R)-6-(benzo[d][1,3]dioxol-5-yl)-2,7-dimethyl-2,3,12,12a-tetrahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4(6H,7H)-dione
Catalogue No.:PA 20 02690
CAS :
NA
Molecular Formula : C23H21N3O4
Molecular Weight : 403.43
(6R)-6-(Benzo[d][1,3]dioxol-5-yl)-7-(hydroxymethyl)-2-methyl-2,3,12,12a-tetrahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4(6H,7H)-dione
(6R)-6-(Benzo[d][1,3]dioxol-5-yl)-7-(hydroxymethyl)-2-methyl-2,3,12,12a-tetrahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4(6H,7H)-dione
Catalogue No.:PA 20 02700
CAS :
NA
Molecular Formula : C23H21N3O5
Molecular Weight : 419.43
(6R)-6-(Benzo[d][1,3]dioxol-5-yl)-7-(hydroxy(5-(hydroxymethyl)furan-2-yl)methyl)-2-methyl-2,3,12,12a-tetrahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4(6H,7H)-dione
(6R)-6-(Benzo[d][1,3]dioxol-5-yl)-7-(hydroxy(5-(hydroxymethyl)furan-2-yl)methyl)-2-methyl-2,3,12,12a-tetrahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4(6H,7H)-dione
Catalogue No.:PA 20 02710
CAS :
NA
Molecular Formula : C28H25N3O7
Molecular Weight : 515.51
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2,9-bis(2-chloroacetyl)-N-methyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxamide
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2,9-bis(2-chloroacetyl)-N-methyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxamide
Catalogue No.:PA 20 02740
CAS :
NA
Molecular Formula : C24H21Cl2N3O5
Molecular Weight : 502.35
(6R,12aR)-6-(Benzo[d][1,3]dioxol-5-yl)-7-(2-chloroacetyl)-2-methyl-2,3,6,7,12,12a-hexahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione
(6R,12aR)-6-(Benzo[d][1,3]dioxol-5-yl)-7-(2-chloroacetyl)-2-methyl-2,3,6,7,12,12a-hexahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione
Catalogue No.:PA 20 02750
CAS :
2520114-95-6
Molecular Formula : C24H20ClN3O5
Molecular Weight : 465.89
(1R,3R)-Methyl-1,2,3,4-tetrahydro-1-(3,4-methylenedioxyphenyl)-9H-pyrido[3,4-b]indole-3-carboxylate
(1R,3R)-Methyl-1,2,3,4-tetrahydro-1-(3,4-methylenedioxyphenyl)-9H-pyrido[3,4-b]indole-3-carboxylate
Catalogue No.:PA 20 02760
CAS :
171596-41-1
Molecular Formula : C20H18N2O4
Molecular Weight : 350.37
(3R)-3-[[2-(1,3-Benzodioxol-5-ylcarbonyl)-1H-indol-3-yl]methyl]-1-methyl-2,5-piperazinedione
(3R)-3-[[2-(1,3-Benzodioxol-5-ylcarbonyl)-1H-indol-3-yl]methyl]-1-methyl-2,5-piperazinedione
Catalogue No.:PA 20 0021000
CAS :
1220393-12-3
Molecular Formula : C22H19N3O5
Molecular Weight : 405.41
(1R,3R)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-N-methyl-1H-pyrido[3,4-b]indole-3-carboxamide
(1R,3R)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-N-methyl-1H-pyrido[3,4-b]indole-3-carboxamide
Catalogue No.:PA 20 0021002
CAS :
951661-81-7
Molecular Formula : C22H20ClN3O4
Molecular Weight : 425.87
(6S,12aS)-6-(3,4-Dihydroxyphenyl)-2-methyl-2,3,6,7,12,12a-hexahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione
(6S,12aS)-6-(3,4-Dihydroxyphenyl)-2-methyl-2,3,6,7,12,12a-hexahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione
Catalogue No.:PA 20 0021006
CAS :
2520114-84-3
Molecular Formula : C21H19N3O4
Molecular Weight : 377.4
(6R,12aS)-6-(3,4-Dihydroxyphenyl)-2-methyl-2,3,6,7,12,12a-hexahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione
(6R,12aS)-6-(3,4-Dihydroxyphenyl)-2-methyl-2,3,6,7,12,12a-hexahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione
Catalogue No.:PA 20 0021007
CAS :
NA
Molecular Formula : C21H19N3O4
Molecular Weight : 377.4
Methyl (1R,3R)-1-(benzo[d][1,3]dioxol-5-yl)-2-(dimethylglycyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
Methyl (1R,3R)-1-(benzo[d][1,3]dioxol-5-yl)-2-(dimethylglycyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
Catalogue No.:PA 20 0021009
CAS :
2169996-11-4
Molecular Formula : C24H25N3O5
Molecular Weight : 435.48
(1R,3R)-Methyl 1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate hydrochloride
(1R,3R)-Methyl 1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate hydrochloride
Catalogue No.:PA 20 0021010
CAS :
171752-68-4
Molecular Formula : C20H19ClN2O4
Molecular Weight : 386.83
(2S,3S,4S,5R,6S)-3,4,5-Trihydroxy-6-(2-methoxy-4-((6R,12aR)-2-methyl-1,4-dioxo-1,2,3,4,6,7,12,12a-octahydropyrazino[1',2':1,6]pyrido[3,4-b]indol-6-yl)phenoxy)tetrahydro-2H-pyran-2-carboxylic Acid
(2S,3S,4S,5R,6S)-3,4,5-Trihydroxy-6-(2-methoxy-4-((6R,12aR)-2-methyl-1,4-dioxo-1,2,3,4,6,7,12,12a-octahydropyrazino[1',2':1,6]pyrido[3,4-b]indol-6-yl)phenoxy)tetrahydro-2H-pyran-2-carboxylic Acid
Catalogue No.:PA 20 0021011
CAS :
378788-18-2
Molecular Formula : C28H29N3O10
Molecular Weight : 567.55
(6R,12aR)-6-(4-Hydroxy-3-methoxyphenyl)-2-methyl-2,3,6,7,12,12a-hexahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione
(6R,12aR)-6-(4-Hydroxy-3-methoxyphenyl)-2-methyl-2,3,6,7,12,12a-hexahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione
Catalogue No.:PA 20 0021012
CAS :
378788-16-0
Molecular Formula : C22H21N3O4
Molecular Weight : 391.43
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxamide
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxamide
Catalogue No.:PA 20 0021015
CAS :
1370438-57-5
Molecular Formula : C19H17N3O3
Molecular Weight : 335.36
Methyl (1R,3R)-1-(benzo[d][1,3]dioxol-5-yl)-9-nitroso-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
Methyl (1R,3R)-1-(benzo[d][1,3]dioxol-5-yl)-9-nitroso-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
Catalogue No.:PA 20 0021017
CAS :
NA
Molecular Formula : C20H17N3O5
Molecular Weight : 379.37
Methyl (1R,3R)-1-(benzo[d][1,3]dioxol-5-yl)-2-nitroso-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
Methyl (1R,3R)-1-(benzo[d][1,3]dioxol-5-yl)-2-nitroso-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
Catalogue No.:PA 20 0021018
CAS :
NA
Molecular Formula : C20H17N3O5
Molecular Weight : 379.37
Methyl (1R,3R)-1-(benzo[d][1,3]dioxol-5-yl)-2,9-dinitroso-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
Methyl (1R,3R)-1-(benzo[d][1,3]dioxol-5-yl)-2,9-dinitroso-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
Catalogue No.:PA 20 0021019
CAS :
NA
Molecular Formula : C20H16N4O6
Molecular Weight : 408.37
Methyl (1R,3R)-1-(benzo[d][1,3]dioxol-5-yl)-2-(2-chloroacetyl)-9-nitroso-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
Methyl (1R,3R)-1-(benzo[d][1,3]dioxol-5-yl)-2-(2-chloroacetyl)-9-nitroso-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
Catalogue No.:PA 20 0021020
CAS :
NA
Molecular Formula : C22H18ClN3O6
Molecular Weight : 455.85
(6bR,12R)-12-(Benzo[d][1,3]dioxol-5-yl)-12a-hydroxy-8-methyl-6a,6b,8,9,12,12a-hexahydropyrazino[1',2':1,2]pyrrolo[3,4-c]quinoline-6,7,10(5H)-trione
(6bR,12R)-12-(Benzo[d][1,3]dioxol-5-yl)-12a-hydroxy-8-methyl-6a,6b,8,9,12,12a-hexahydropyrazino[1',2':1,2]pyrrolo[3,4-c]quinoline-6,7,10(5H)-trione
Catalogue No.:PA 20 0021021
CAS :
2194574-01-9
Molecular Formula : C22H19N3O6
Molecular Weight : 421.41
(6R,12bR)-6-(Benzo[d][1,3]dioxol-5-yl)-12-hydroxy-2-methyl-2,3,6,12b-tetrahydropyrazino[1',2':1,5]pyrrolo[3,4-b]quinoline-1,4-dione
(6R,12bR)-6-(Benzo[d][1,3]dioxol-5-yl)-12-hydroxy-2-methyl-2,3,6,12b-tetrahydropyrazino[1',2':1,5]pyrrolo[3,4-b]quinoline-1,4-dione
Catalogue No.:PA 20 0021022
CAS :
1978323-00-0
Molecular Formula : C22H17N3O5
Molecular Weight : 403.39
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid Hydrochloride
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid Hydrochloride
Catalogue No.:PA 20 0021024
CAS :
474668-76-3
Molecular Formula : C19H17ClN2O4
Molecular Weight : 372.81
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid
Catalogue No.:PA 20 0021025
CAS :
2058231-08-4
Molecular Formula : C21H17ClN2O5
Molecular Weight : 412.83
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-N-methyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxamide
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-N-methyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxamide
Catalogue No.:PA 20 0021027
CAS :
951661-82-8
Molecular Formula : C20H19N3O3
Molecular Weight : 349.39
(1S,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2-(2-chloroacetyl)-N-methyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxamide
(1S,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2-(2-chloroacetyl)-N-methyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxamide
Catalogue No.:PA 20 0021028
CAS :
951661-84-0
Molecular Formula : C22H20ClN3O4
Molecular Weight : 425.87
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2-nitroso-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2-nitroso-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid
Catalogue No.:PA 20 0021031
CAS :
NA
Molecular Formula : C19H15N3O5
Molecular Weight : 365.35
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid
(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid
Catalogue No.:PA 20 0021032
CAS :
406938-39-4
Molecular Formula : C19H16N2O4
Molecular Weight : 336.35
