ledipasvir and its Impurities
Ledipasvir is most commonly used in combination with sofosbuvir for treatment in chronic hepatitis C genotype 1 patients. Reference standards of Ledipasvir API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
tert-Butyl (1R,3R,4S)-3-(6-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzo[d]imidazol-2-yl)-2-azabicyclo[2.2.1]heptane-2-carboxylate
tert-Butyl (1R,3R,4S)-3-(6-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzo[d]imidazol-2-yl)-2-azabicyclo[2.2.1]heptane-2-carboxylate
Catalogue No.:PA 12 77510
CAS :
NA
Molecular Formula : C24H34BN3O4
Molecular Weight : 439.36
tert-Butyl (1S,3S,4R)-3-(6-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzo[d]imidazol-2-yl)-2-azabicyclo[2.2.1]heptane-2-carboxylate
tert-Butyl (1S,3S,4R)-3-(6-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzo[d]imidazol-2-yl)-2-azabicyclo[2.2.1]heptane-2-carboxylate
Catalogue No.:PA 12 77520
CAS :
NA
Molecular Formula : C24H34BN3O4
Molecular Weight : 439.36
Methyl ((S)-1-((S)-6-(5-(7-(2-((1R,3S,4S)-2-((methoxycarbonyl)-L-valyl)-2-azabicyclo[2.2.1]heptan-3-yl)-1H-benzo[d]imidazol-6-yl)-9-oxo-9H-fluoren-2-yl)-1H-imidazol-2-yl)-5-azaspiro[2.4]heptan-5-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Methyl ((S)-1-((S)-6-(5-(7-(2-((1R,3S,4S)-2-((methoxycarbonyl)-L-valyl)-2-azabicyclo[2.2.1]heptan-3-yl)-1H-benzo[d]imidazol-6-yl)-9-oxo-9H-fluoren-2-yl)-1H-imidazol-2-yl)-5-azaspiro[2.4]heptan-5-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Catalogue No.:PA 12 77580
CAS :
2040487-43-0
Molecular Formula : C49H54N8O7
Molecular Weight : 867.02
Methyl ((R)-1-((S)-6-(5-(9,9-difluoro-7-(2-((1R,3S,4S)-2-((methoxycarbonyl)-L-valyl)-2-azabicyclo[2.2.1]heptan-3-yl)-1H-benzo[d]imidazol-6-yl)-9H-fluoren-2-yl)-1H-imidazol-2-yl)-5-azaspiro[2.4]heptan-5-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Methyl ((R)-1-((S)-6-(5-(9,9-difluoro-7-(2-((1R,3S,4S)-2-((methoxycarbonyl)-L-valyl)-2-azabicyclo[2.2.1]heptan-3-yl)-1H-benzo[d]imidazol-6-yl)-9H-fluoren-2-yl)-1H-imidazol-2-yl)-5-azaspiro[2.4]heptan-5-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Catalogue No.:PA 12 0771000
CAS :
1256393-35-7
Molecular Formula : C49H54F2N8O6
Molecular Weight : 889
Methyl ((S)-1-((S)-6-(5-(9,9-difluoro-7-(2-((1R,3S,4S)-2-((methoxycarbonyl)-D-valyl)-2-azabicyclo[2.2.1]heptan-3-yl)-1H-benzo[d]imidazol-6-yl)-9H-fluoren-2-yl)-1H-imidazol-2-yl)-5-azaspiro[2.4]heptan-5-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Methyl ((S)-1-((S)-6-(5-(9,9-difluoro-7-(2-((1R,3S,4S)-2-((methoxycarbonyl)-D-valyl)-2-azabicyclo[2.2.1]heptan-3-yl)-1H-benzo[d]imidazol-6-yl)-9H-fluoren-2-yl)-1H-imidazol-2-yl)-5-azaspiro[2.4]heptan-5-yl)-3-methyl-1-oxobutan-2-yl)carbamate
Catalogue No.:PA 12 0771001
CAS :
1256391-66-8
Molecular Formula : C49H54F2N8O6
Molecular Weight : 889
