Impurity Standards

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Levocetirizine Amide Impurity

Product Code:
DH/LCT/1003
Molecular Formula:
C21H26ClN3O2
CAS Number:
909779-33-5
Molecular Weight:
387.9
Synonyms: : (R)-2-(2-{4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl}ethoxy)acetamide.


Levofloxacin EP Impurity A

Product Code:
DH/LFC/1001
Molecular Formula:
C18H20FN3O4
CAS Number:
100986-86-5
Molecular Weight:
361.37
Synonyms: (3R)-9-Fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid; (R)-(+)-Ofloxacin ; D-Ofloxacin ; Ofloxacin R-Isomer ; Levofloxacin D-Isomer


Levofloxacin EP Impurity B

Product Code:
DH/LFC/1002
Molecular Formula:
C17H18FN3O4
CAS Number:
117707-40-1
Molecular Weight:
347.34
Synonyms: (-)-(S)-9-Fluoro-2,3-dihydro-3-methyl-10-(1-piperazinyl) -7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid; Levofloxacin Related Compound A; N-Desmethyl Levofloxacin.


Levofloxacin EP Impurity C

Product Code:
DH/LFC/1003
Molecular Formula:
C18H20FN3O5
CAS Number:
117678-37-2
Molecular Weight:
377.37
Synonyms: (-)-(S)-9-Fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid N-oxide; Levofloxacin N-Oxide


Levofloxacin EP Impurity D

Product Code:
DH/LFC/1004
Molecular Formula:
C18H21N3O4
CAS Number:
117620-85-6
Molecular Weight:
343.38
Synonyms: (-)-(S)-2,3-Dihydro-3-methyl-10-(4-methyl-1-piperazinyl) -7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid; Levofloxacin Desfluoro Impurity ; Levofloxacin Related Compound F


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