| 1 | | 3-{5-[2-(difluoromethoxy)phenyl]-1,3-oxazol-2-yl}propanoic acid | 3-{5-[2-(difluoromethoxy)phenyl]-1,3-oxazol-2-yl}propanoic acid | C13H11F2NO4
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| 2 | 866008-16-4 | 5-[(3,4-difluorobenzyl)oxy]-6-oxo-1,2,3,6-tetrahydro-4-pyridinecarboxylic acid | 5-[(3,4-difluorobenzyl)oxy]-6-oxo-1,2,3,6-tetrahydro-4-pyridinecarboxylic acid | C13H11F2NO4
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| 3 | 950726-72-4 | 3-Quinolinecarboxylic acid, 6,7-difluoro-1,4-dihydro-8-methoxy-4-oxo-, ethyl ester | 3-Quinolinecarboxylic acid, 6,7-difluoro-1,4-dihydro-8-methoxy-4-oxo-, ethyl ester | C13H11F2NO4
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| 4 | 1026952-91-9 | 左氧氟沙星杂质H | (3S)-9,10-difluoro-3-methyl-7-oxo-2,3,6,7-tetrahydro-5H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid | C13H11F2NO4
| 杂质对照品;对照品-杂质对照品 | |