Impurity Standards

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Cinnarizine EP Impurity B

Product Code:
DH /CRN/1002
Molecular Formula:
C26H28N2
CAS Number:
750512-44-8
Molecular Weight:
368.5
Synonyms: (Z)-1-(Diphenylmethyl)-4-(3-phenylprop-2-enyl)piperazine


Cinnarizine EP Impurity C

Product Code:
DH /CRN/1003
Molecular Formula:
C35H37ClN2
CAS Number:
95062-18-3
Molecular Weight:
521.13
Synonyms: (4-(Diphenylmethyl)-1,1-bis[(E)-3-phenylprop-2-enyl]piperazinium chloride


Cinnarizine EP Impurity D

Product Code:
DH /CRN/1004
Molecular Formula:
C35H36N2
CAS Number:
1199751-98-8
Molecular Weight:
484.67
Synonyms: 1-(Diphenylmethyl)-4-[(1RS,3E)-4-phenyl-1-[(E)-2-phenylethenyl]but-3-enyl]piperazine


Ciprofloxacin EP Impurity A

Product Code:
DH /CFN/1001
Molecular Formula:
C13H9ClFNO3
CAS Number:
86393-33-1
Molecular Weight:
281.67
Synonyms: 7-Chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid


Ciprofloxacin EP Impurity B

Product Code:
DH /CFN/1002
Molecular Formula:
C17H19N3O3
CAS Number:
93107-11-0
Molecular Weight:
313.35
Synonyms: 1-Cyclopropyl-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid


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