Dhamtec Pharma and Consultants-
Dhamtec Pharma and Consultants-

Impurity Standards

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Tadalafil EP Impurity A

Product Code:
DH/TDF/1001		Molecular Formula:
C22H19N3O4
CAS Number:
171596-27-3		Molecular Weight:
389.40
Synonyms: (6R,12aS)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino [1′,2′:1,6]pyrido[3,4-b]indole-1,4-dione


Tadalafil EP Impurity B

Product Code:
DH/TDF/1002		Molecular Formula:
C22H19N3O4
CAS Number:
629652-72-8		Molecular Weight:
389.40
Synonyms: (6S,12aS)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino [1′,2′:1,6]pyrido[3,4-b]indole-1,4-dione


Tadalafil EP Impurity C

Product Code:
DH/TDF/1003		Molecular Formula:
C22H19N3O4
CAS Number:
171596-28-4		Molecular Weight:
389.40
Synonyms: (6S,12aR)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino [1′,2′:1,6]pyrido[3,4-b]indole-1,4-dione


Tadalafil Impurity N-Desmethyl

Product Code:
DH/TDF/1004		Molecular Formula:
C21H17N3O4
CAS Number:
171596-36-4		Molecular Weight:
375.38
Synonyms: (6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro pyrazino [1′,2′:1,6]-pyrido[3,4-b]indole-1,4-dione


Telmisartan EP Impurity A

Product Code:
DH/TMN/1001		Molecular Formula:
C19H20N4
CAS Number:
152628-02-9		Molecular Weight:
304.39
Synonyms: 4-Methyl-6-(1-methyl-1H-1,3-benzodiazol-2-yl)-2-propyl-1H-1,3-benzodiazole


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