Impurity Standards

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Valsartan Impurity Desoxopentyl

Product Code:
DH/VLS/1004
Molecular Formula:
C19H21N5O2
CAS Number:
N/A
Molecular Weight:
351.4
Synonyms: (2S)-3-Methyl-2-[[[2`-(1H-tetrazol-5-yl)biphenyl-4-yl]methyl]amino]butanoic acid


Valsartan Impurity Methyl Ester

Product Code:
DH/VLS/1007
Molecular Formula:
C25H31N5O3
CAS Number:
137863-17-3
Molecular Weight:
449.55
Synonyms: N-(1-Oxopentyl)-N-[[2'-(1H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-L-valine methyl ester


Voriconazole EP Impurity A

Product Code:
DH/VRZ/1013
Molecular Formula:
C10H7F2N3O
CAS Number:
86404-63-9
Molecular Weight:
223.18
Synonyms: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone


Voriconazole EP Impurity B

Product Code:
DH/VRZ/1001
Molecular Formula:
C16H15F2N5O
CAS Number:
182369-73-9
Molecular Weight:
331.32
Synonyms: (2RS,3SR)-2-(2,4-Difluorophenyl)-3-pyrimidin-4-yl-1-(1H-1,2,4-triazol-1-yl)butan-2-ol


Voriconazole EP Impurity C

Product Code:
DH/VRZ/1014
Molecular Formula:
C6H7FN2
CAS Number:
137234-88-9
Molecular Weight:
126.13
Synonyms: 4-Ethyl-5-fluoropyrimidine


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