Impurity Standards

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Irbesartan Triphenylmethanol Impurity

Product Code:
DH/ISN/1005
Molecular Formula:
C19H16O
CAS Number:
76-84-6
Molecular Weight:
260.33
Synonyms: Triphenylmethanol


Irbesartan Propyl Analog

Product Code:
DH/ISN/1006
Molecular Formula:
C24H26N6O
CAS Number:
158778-58-6
Molecular Weight:
414.50
Synonyms: 2-Propyl-3-[p-(o-1H-tetrazol-5-ylphenyl)benzyl]-1,3-diazaspiro[4.4]non-1-en-4-on


Irbesartan Dimethyl Impurity

Product Code:
DH/ISN/1007
Molecular Formula:
C23H26N6O
CAS Number:
141745-36-0
Molecular Weight:
402.49
Synonyms: 2-Butyl-3,5-dihydro-5,5-dimethyl-3-[[2’-(2H-tetrazol-5-yl)[1,1’-biphenyl]-4-yl]methyl]-4H-imidazol-4-one.


Irbesartan EP Impurity A

Product Code:
DH/ISN/1001
Molecular Formula:
C25H30N6O2
CAS Number:
748812-53-5
Molecular Weight:
446.54
Synonyms: 1-Pentanoylamino-cyclopentanecarboxylic acid [2'-(1H-tetrazol-5-yl)-biphenyl-4- ylmethyl]-amide


Irbesartan Methyl Impurity

Product Code:
DH/ ISN/1003
Molecular Formula:
C14H12N4
CAS Number:
120568-11-8
Molecular Weight:
236.27
Synonyms: 5-(4'-Methyl-(1,1'-biphenyl)-2-yl)-1H-tetrazole


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