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Dhamtec Pharma and Consultants-

Impurity Standards

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Ursodeoxycholic Acid EP Impurity G

Product Code:
DH/UDC/1007		Molecular Formula:
C25H42O4
CAS Number:
10538-55-3		Molecular Weight:
406.6
Synonyms: Methyl 3alpha,7beta-dihydroxy-5beta-cholan-24-oate


Ursodeoxycholic Acid EP Impurity H

Product Code:
DH/UDC/1008		Molecular Formula:
C24H40O4
CAS Number:
78919-26-3		Molecular Weight:
392.57
Synonyms: 3beta,7beta-Dihydroxy-5beta-cholan-24-oic acid


Ursodeoxycholic Acid EP Impurity I

Product Code:
DH/UDC/1009		Molecular Formula:
C24H42O3
CAS Number:
130593-75-8		Molecular Weight:
378.59
Synonyms: 5beta-Cholane-3alpha,7beta,24-triol ;


Valacyclovir Impurity A

Product Code:
DH/VLC/1012		Molecular Formula:
C5H5N5O
CAS Number:
73-40-5		Molecular Weight:
151.13
Synonyms: 2-amino-1,9-dihydro-6H-purin-6-one


Valacyclovir Impurity B

Product Code:
DH/VLC/1010		Molecular Formula:
C8H11N5O3
CAS Number:
59277-89-3		Molecular Weight:
225.20
Synonyms: 2-amino-9-[(2-hydroxyethoxy)methyl]-1,9-dihydro-6H-purin-6-one


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