Impurity Standards

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Clarithromycin EP Impurity A

Product Code:
DH /CLM/1001
Molecular Formula:
C38H69NO14
CAS Number:
124412-58-4
Molecular Weight:
763.95
Synonyms: 2-Demethyl-2-(hydroxymethyl)-6-O-methylerythromycin A


Clarithromycin EP Impurity B

Product Code:
DH /CLM/1002
Molecular Formula:
C37H67NO13
CAS Number:
299409-85-1
Molecular Weight:
733.93
Synonyms: 6-O-Methyl-15-norerythromycin A


Clarithromycin EP Impurity C

Product Code:
DH /CLM/1003
Molecular Formula:
C38H70N2O13
CAS Number:
103450-87-9
Molecular Weight:
762.97
Synonyms: 6-O-Methylerythromycin A (E)-9-oxime


Clarithromycin EP Impurity D

Product Code:
DH /CLM/1004
Molecular Formula:
C37H67NO13
CAS Number:
101666-68-6
Molecular Weight:
733.93
Synonyms: N-Desmethyl Clarithromycin ; 3″-N-Demethyl-6-O-methylerythromycin A ;USP Clarithromycin Impurity D;


Clarithromycin EP Impurity E

Product Code:
DH /CLM/1005
Molecular Formula:
C39H71NO13
CAS Number:
81103-14-2
Molecular Weight:
761.98
Synonyms: Clarithromycin USP RC A ; 6,11-Di-O-methylerythromycin A ;


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