velpatasvir and its Impurities
Velpatasvir used as part of combination therapy to treat chronic Hepatitis C, an infectious liver disease caused by infection with Hepatitis C Virus. It is an NS5A inhibitor.Reference standards of Velpatasvir API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


Methyl ((R)-2-((2S,4S)-2-(5-(2-((2S,4S)-1-((R)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-1,11dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Methyl ((R)-2-((2S,4S)-2-(5-(2-((2S,4S)-1-((R)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-1,11dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Catalogue No.:PA 22 24660
CAS :
1493769-28-0
Molecular Formula : C53H54N8O9
Molecular Weight : 947.04


(2S,4S)-Tert-butyl 2-(5-(2-((2S,5S)-1-((R)-2-((methoxycarbonyl)amino)-3-methylbutanoyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidine-1-carboxylate
(2S,4S)-Tert-butyl 2-(5-(2-((2S,5S)-1-((R)-2-((methoxycarbonyl)amino)-3-methylbutanoyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidine-1-carboxylate
Catalogue No.:PA 22 24690
CAS :
NA
Molecular Formula : C44H53N7O7
Molecular Weight : 791.93


Methyl ((2S)-1-((2S,5S)-2-(11-Hydroxy-9-(2-((2S,4S)-1-((R)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-3λ2-imidazol-4-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Methyl ((2S)-1-((2S,5S)-2-(11-Hydroxy-9-(2-((2S,4S)-1-((R)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-3λ2-imidazol-4-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Catalogue No.:PA 22 24710
CAS :
NA
Molecular Formula : C49H53N8O9
Molecular Weight : 898.01


Methyl ((2S)-1-((2S,5S)-2-(11-Ethoxy-9-(2-((2S,4S)-1-((R)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-3λ2-imidazol-4-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Methyl ((2S)-1-((2S,5S)-2-(11-Ethoxy-9-(2-((2S,4S)-1-((R)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-3λ2-imidazol-4-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Catalogue No.:PA 22 24720
CAS :
NA
Molecular Formula : C51H57N8O9
Molecular Weight : 926.06


Methyl ((S)-1-((2S,5S)-2-(9-(2-((2S,4R)-1-((R)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-3l2-imidazol-4-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Methyl ((S)-1-((2S,5S)-2-(9-(2-((2S,4R)-1-((R)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-3l2-imidazol-4-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Catalogue No.:PA 22 24730
CAS :
NA
Molecular Formula : C49H53N8O8
Molecular Weight : 882.01


Methyl ((S)-1-((2S,5S)-2-(9-(2-((2R,4S)-1-((S)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-3l2-imidazol-4-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Methyl ((S)-1-((2S,5S)-2-(9-(2-((2R,4S)-1-((S)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-3l2-imidazol-4-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Catalogue No.:PA 22 24740
CAS :
NA
Molecular Formula : C49H53N8O8
Molecular Weight : 882.01


Methyl ((R)-2-((2S,4S)-2-(9-(2-((2S,4S)-1-((R)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Methyl ((R)-2-((2S,4S)-2-(9-(2-((2S,4S)-1-((R)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Catalogue No.:PA 22 0241000
CAS :
NA
Molecular Formula : C53H54N8O9
Molecular Weight : 947.06


Methyl ((S)-1-((2S,5S)-2-(9-(2-((2S,4S)-4-(methoxymethyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Methyl ((S)-1-((2S,5S)-2-(9-(2-((2S,4S)-4-(methoxymethyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Catalogue No.:PA 22 0241005
CAS :
1844064-96-5
Molecular Formula : C39H45N7O5
Molecular Weight : 691.83


Methyl ((S)-1-((2S,5S)-2-(9-(2-((2R,4S)-4-(methoxymethyl)-1-nitrosopyrrolidin-2-yl)-1H-imidazol-5-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Methyl ((S)-1-((2S,5S)-2-(9-(2-((2R,4S)-4-(methoxymethyl)-1-nitrosopyrrolidin-2-yl)-1H-imidazol-5-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Catalogue No.:PA 22 0241006
CAS :
NA
Molecular Formula : C39H44N8O6
Molecular Weight : 720.83


Methyl ((S)-2-((2S,4S)-2-(4-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Methyl ((S)-2-((2S,4S)-2-(4-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Catalogue No.:PA 22 0241007
CAS :
1493768-22-1
Molecular Formula : C49H54N8O8
Molecular Weight : 883.02


Methyl ((R)-2-((2S,4S)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-11-oxo-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Methyl ((R)-2-((2S,4S)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-11-oxo-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Catalogue No.:PA 22 0241008
CAS :
1493768-01-6
Molecular Formula : C49H52N8O9
Molecular Weight : 897


Methyl ((R)-2-((2R,4R)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Methyl ((R)-2-((2R,4R)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Catalogue No.:PA 22 0241009
CAS :
NA
Molecular Formula : C49H54N8O8
Molecular Weight : 883.02


Methyl ((S)-1-((2S,5S)-2-(9-(1-(4,6-dimethoxy-1,3,5-triazin-2-yl)-2-((2S,4S)-1-((R)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-1H-imidazol-4-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Methyl ((S)-1-((2S,5S)-2-(9-(1-(4,6-dimethoxy-1,3,5-triazin-2-yl)-2-((2S,4S)-1-((R)-2-((methoxycarbonyl)amino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-1H-imidazol-4-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Catalogue No.:PA 22 0241010
CAS :
NA
Molecular Formula : C54H59N11O10
Molecular Weight : 1022.13


Methyl ((S)-1-((2S,5S)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Methyl ((S)-1-((2S,5S)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Catalogue No.:PA 22 0241011
CAS :
NA
Molecular Formula : C45H54N8O7
Molecular Weight : 818.98


Methyl ((R)-2-((2S,4S)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-8-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Methyl ((R)-2-((2S,4S)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-8-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Catalogue No.:PA 22 0241012
CAS :
NA
Molecular Formula : C49H54N8O8
Molecular Weight : 883.02


Methyl ((1R)-2-((2S,4S)-2-(5-(11-hydroxy-2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Methyl ((1R)-2-((2S,4S)-2-(5-(11-hydroxy-2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Catalogue No.:PA 22 0241013
CAS :
NA
Molecular Formula : C49H54N8O9
Molecular Weight : 899.02


Methyl ((R)-2-((2S,4R)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Methyl ((R)-2-((2S,4R)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Catalogue No.:PA 22 0241014
CAS :
NA
Molecular Formula : C49H54N8O8
Molecular Weight : 883.02


Methyl ((1R)-2-((2S,4S)-2-(4-(11-hydroxy-2-((2S,5S)-1-((methoxycarbonyl)-D-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Methyl ((1R)-2-((2S,4S)-2-(4-(11-hydroxy-2-((2S,5S)-1-((methoxycarbonyl)-D-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Catalogue No.:PA 22 0241016
CAS :
NA
Molecular Formula : C49H54N8O9
Molecular Weight : 899.02


Methyl ((R)-2-((2R,4S)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Methyl ((R)-2-((2R,4S)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Catalogue No.:PA 22 0241017
CAS :
NA
Molecular Formula : C49H54N8O8
Molecular Weight : 883.02


Methyl ((R)-2-((2S,4S)-2-(5-(2-((2S,5R)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Methyl ((R)-2-((2S,4S)-2-(5-(2-((2S,5R)-1-((methoxycarbonyl)-L-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Catalogue No.:PA 22 0241018
CAS :
NA
Molecular Formula : C49H54N8O8
Molecular Weight : 883.02


Methyl ((S)-2-((2S,4S)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-D-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Methyl ((S)-2-((2S,4S)-2-(5-(2-((2S,5S)-1-((methoxycarbonyl)-D-valyl)-5-methylpyrrolidin-2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-9-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-2-oxo-1-phenylethyl)carbamate
Catalogue No.:PA 22 0241019
CAS :
NA
Molecular Formula : C49H54N8O8
Molecular Weight : 883.02


Methyl ((S)-1-((2S,5S)-2-(9-(2-((2S,4S)-1-((R)-2-amino-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Methyl ((S)-1-((2S,5S)-2-(9-(2-((2S,4S)-1-((R)-2-amino-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Catalogue No.:PA 22 0241020
CAS :
2540585-85-9
Molecular Formula : C47H52N8O6
Molecular Weight : 824.98


Methyl ((S)-1-((2S,5S)-2-(9-(2-((2S,4S)-1-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-(methoxymethyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Methyl ((S)-1-((2S,5S)-2-(9-(2-((2S,4S)-1-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-(methoxymethyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-5-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Catalogue No.:PA 22 0241022
CAS :
NA
Molecular Formula : C44H50N10O7
Molecular Weight : 830.95