左氧氟沙星杂质   Levofloxacin impurity

ZYX-A  (S)-9-fluoro-3-methyl-7-oxo-10(piperazin-1-yl)-3,7-dihydro-2H [1,4]oxazino[2,3,4-ij]quinoline-6carboxylic acid hydrochloride   (free base：11770740-1)

ZYX-B  (S)-9-fluoro-3-methyl-10-((2(methylamino)ethyl)amino)-7-oxo-2,3dihydro-7H-[1,4]oxazino[2,3,4ij]quinoline-6-carboxylic acid  hydrochloride  1346603-62-0

ZYX-C  (S)-4-(6-carboxy-9-fluoro-3-methyl-7oxo-2,3-dihydro-7H-[1,4]oxazino[2,3,4ij]quinolin-10-yl)-1-methylpiperazine 1oxide  117678-38-3

ZYX-D  (S)-3-methyl-10-(4-methylpiperazin-1yl)-7-oxo-2,3-dihydro-7H[1,4]oxazino[2,3,4-ij]quinoline-6carboxylic acid  117620-85-6

ZYX-E  (R)-9-fluoro-3-methyl-10-(4methylpiperazin-1-yl)-7-oxo-2,3-dihydro7H-[1,4]oxazino[2,3,4-ij]quinoline-6carboxylic acid  100986-86-5

ZYX-F  (S)-9-fluoro-3-methyl-10-(4methylpiperazin-1-yl)-2,3-dihydro-7H[1,4]oxazino[2,3,4-ij]quinolin-7-one hydrochloride  178964-53-9

ZYX-G  10-fluoro-3-methyl-9-(4methylpiperazin-1-yl)-7-oxo-2,3-dihydro7H-[1,4]oxazino[2,3,4-ij]quinoline-6carboxylic acid compound with 2,2,2trifluoroacetic acid (1:1)  （free base： 197291-75-1）

ZYX-H  (S)-9,10-difluoro-3-methyl-7-oxo-2,3dihydro-7H-[1,4]oxazino[2,3,4ij]quinoline-6-carboxylic acid  100986-89-8

ZYX-I  ethyl (S)-10-fluoro-3-methyl-7-oxo-2,3dihydro-7H-[1,4]oxazino[2,3,4ij]quinoline-6-carboxylate  431058-46-7

ZYX-J  (S)-10-fluoro-3-methyl-7-oxo-2,3dihydro-7H-[1,4]oxazino[2,3,4ij]quinoline-6-carboxylic acid  117620-84-5

ZYX-K  ethyl (R)-9,10-difluoro-3-methyl-7-oxo2,3-dihydro-7H-[1,4]oxazino[2,3,4ij]quinoline-6-carboxylate  110548-06-6

ZYX-L  (R)-9,10-difluoro-3-methyl-7-oxo-2,3dihydro-7H-[1,4]oxazino[2,3,4ij]quinoline-6-carboxylic acid  110548-07-7

ZYX-M  ethyl (S)-9,10-difluoro-3-methyl-7-oxo2,3-dihydro-7H-[1,4]oxazino[2,3,4ij]quinoline-6-carboxylate  106939-34-8

ZYX-Y  ethyl (Z)-3-ethoxy-2-(2,3,4,5tetrafluorobenzoyl)acrylate  103995-33-1

ZYX-Z  ethyl (S,Z)-3-((1-hydroxypropan-2yl)amino)-2-(2,3,4,5tetrafluorobenzoyl)acrylate  110548-02-2

ZYX-G01  (S)-10-fluoro-3-methyl-9-(4methylpiperazin-1-yl)-7-oxo-2,3-dihydro7H-[1,4]oxazino[2,3,4-ij]quinoline-6carboxylic acid  178912-62-4

ZYX-V  ethyl 3-oxo-3-(2,3,4,5tetrafluorophenyl)propanoate  94695-50-8