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CAS号: 110548-06-6 英文名称: ethyl (R)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylate 英文同义词: LEVOFLOXACIN-11;Levofloxacin-11;Levofloacin Impurity 9;Levofloacin Impurity K;Levofloxacin Impurity K;(R)-ethyl 9,10-difluoro-3-methyl-;ethyl (R)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylate;ethyl (R)-(+)-9,10-difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylate;7H-Pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid, 9,10-difluoro-2,3-dihydro-3-methyl-7-oxo-, ethyl ester, (3R)-;Levofloxacin impurity 13/Ethyl (R)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylate 中文名称: 左氧氟沙星杂质K 中文同义词: 左氧氟沙星杂质K 分子式: C15H13F2NO4 分子量: 309.26 熔点 : 254-255 °C(Solv: ethanol (64-17-5)) 沸点 : 442.2±45.0 °C(Predicted) 密度 : 1.43±0.1 g/cm3(Predicted) 酸度系数(pKa): -3.62±0.60(Predicted)