Impurity Standards

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Desbenzyl Donepezil

Product Code:
DH /DPZ/1006
Molecular Formula:
C17H23NO3
CAS Number:
120014-30-4
Molecular Weight:
289.37
Synonyms: 2,3-Dihydro-5,6-dimethoxy-2-(4-piperidinylmethyl)-1H-inden-1-one


Donepezil open ring impurity

Product Code:
DH /DPZ/1007
Molecular Formula:
C24H29NO5
CAS Number:
197010-25-6
Molecular Weight:
411.49
Synonyms: 4,5-Dimethoxy-2-[2-oxo-3-[1-(phenylmethyl)-4-piperidinyl]propyl]benzoic Acid


Donepezil 3-Hydroxy Impurity

Product Code:
DH /DPZ/1009
Molecular Formula:
C24H29NO4
CAS Number:
2097683-67-3
Molecular Weight:
395.49
Synonyms: 2-((1-Benzylpiperidin-4-yl)methyl)-3-hydroxy-5,6-dimethoxy-2,3-dihydroinden-1-one


Duloxetine Impurity B

Product Code:
DH/DLX/1012
Molecular Formula:
C8H13NOS
CAS Number:
116539-55-0
Molecular Weight:
171.26
Synonyms: (1S)-3-(Methylamino)-1-(thiophen-2-yl)propan-1-ol


Duloxetine Impurity C

Product Code:
DH/DLX/1004
Molecular Formula:
C18H20NOClS
CAS Number:
949096-01-9
Molecular Weight:
333.88
Synonyms: 4-[(1RS)-3-(Methylamino)-1-(thiophen-2-yl)propyl]naphthalen-1-ol HCl


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