Norfloxacin 6-Chloro AnalogNorfloxacin IMP 6-Chloro-1-ethyl-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic Acid

Norfloxacin N-Formyl Impurity Norfloxacin IMP 1-Ethyl-6-fluoro-7-(4-formylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic Acid

Norfloxacin N-Ethoxycarbonyl Impurity Norfloxacin IMP 7-[4-(Ethoxycarbonyl)piperazin-1-yl]-1-ethyl-6-fluoro-4-oxo-1,4-dihydro quinoline-3-carboxylic Acid

Norfloxacin N-Methyl AnalogNorfloxacin IMP 6-Fluoro-1-methyl-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic Acid

Ofloxacin Impurity AOflaxacin IMP (RS)-9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid

Decarboxyl Ofloxacin ImpurityOflaxacin IMP 9-Fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7H-pyrido[1,2,3-de]-1,4-benzoxazin-7-one

Nifuroxazide Impurity BNifuroxazide IMP p-Hydroxybenzoic Acid methyl ester

Nimesulide Impurity ANimesulide IMP N-(2,4-Dinitro-6-phenoxyphenyl)methanesulphonamide

Nimesulide Impurity BNimesulide IMP N-(2-Phenoxyphenyl)methanesulphonamide

2-PhenoxyanilineNimesulide IMP 2-Aminophenyl phenyl ether