valaciclovir hydrochloride and its Impurities
Valaciclovir Hydrochloride is used to treat outbreaks of herpes simplex or herpes zoster. It is available as a generic medication. Valaciclovir, also spelled valacyclovir.Reference standards of Valaciclovir Hydrochloride API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


2-((2-Amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy)ethyl N-((benzyloxy)carbonyl)-N-methyl-L-valinate
2-((2-Amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy)ethyl N-((benzyloxy)carbonyl)-N-methyl-L-valinate
Catalogue No.:PAI 22 001005
CAS :
1447587-97-4
Molecular Formula : C22H28N6O6
Molecular Weight : 472.5


2-((2-Amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy)ethyl N-(tert-butoxycarbonyl)-N-methyl-L-valinate
2-((2-Amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy)ethyl N-(tert-butoxycarbonyl)-N-methyl-L-valinate
Catalogue No.:PAI 22 001006
CAS :
142963-68-6
Molecular Formula : C19H30N6O6
Molecular Weight : 438.49


2-((2-Amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy)ethyl N-((benzyloxy)carbonyl)-N-ethyl-L-valinate
2-((2-Amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy)ethyl N-((benzyloxy)carbonyl)-N-ethyl-L-valinate
Catalogue No.:PAI 22 001007
CAS :
1447587-98-5
Molecular Formula : C23H30N6O6
Molecular Weight : 486.53


2-((2-Amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy)ethyl N-(tert-butoxycarbonyl)-N-ethyl-L-valinate
2-((2-Amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy)ethyl N-(tert-butoxycarbonyl)-N-ethyl-L-valinate
Catalogue No.:PAI 22 001008
CAS :
NA
Molecular Formula : C20H32N6O6
Molecular Weight : 452.51

![N-(2-((2-Amino-4-oxo-4,7-dihydro-3H-pyrrolo[3,2-d] PA 22 0011008](https://www.pharmaffiliates.com/pimages/PA220011008.jpg)
N-(2-((2-Amino-4-oxo-4,7-dihydro-3H-pyrrolo[3,2-d]pyrimidin-7-yl)methoxy)ethyl)-N-nitrosoalanine
N-(2-((2-Amino-4-oxo-4,7-dihydro-3H-pyrrolo[3,2-d]pyrimidin-7-yl)methoxy)ethyl)-N-nitrosoalanine
Catalogue No.:PA 22 0011008
CAS :
NA
Molecular Formula : C12H16N6O5
Molecular Weight : 324.3