中文名左旋氧氟沙星羧酸英文名Levofloxacin carboxylic acid别名左氟羧酸左氧氟羧酸左旋氧氟沙星羧酸左氧氟沙星Q-酸左氧氟沙星二氟羧酸左氧氟沙星相关化合物B左氟羧酸(左旋氧氟沙星羧酸)(S)-9,10-二氟-2,3-二氢-3-甲基-7-氧代-(3S)-7H-吡啶并[1,2,3-de]-1,4-苯并嗪-6-羧酸英文别名Levofloxacin acidLevofluorocarboxylic acidLevefluorocarboxylic AcidLevofloxacin carboxylic acidLevofloxacin USP Related CoMpound B (EP IMpC)Levo Q Acid(oxa-2,3 dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]xylic acid(3S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]xylic acid(3S)-9,10-Difluoro-2,3-dihydro-3-Methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-(3S)-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid7H-Pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylicacid,9,10-difluoro-2,3-dihydro-3-Methyl-7-oxo-,(3S)-(S)-(-)-9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de][1,4]benzoxadine-6-carboxylic AcidLevofloxacin Related Compound B (35 mg) ((S)-9,10,difluro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid)CASEINECS化学式C13H9F2NO4分子量281.21InChIInChI=1/C13H9F2NO4/c(15)8(14)2-6-10(12)16(5)3-7(11(6)17)13(18)19/h2-3,5H,4H2,1H3,(H,18,19)/t5-/m0/s1密度1.61±0.1 g/cm3(Predicted)熔点>300 °C (lit.)沸点459.2±45.0 °C(Predicted)比旋光度]20/D -64°, c = 1% in DMSO闪点231.5°C蒸汽压3.14E-09mmHg at 25°C溶解度DMSO (Slightly)折射率1.635酸度系数4.87±0.40(Predicted)存储条件Sealed in dry,Room Temperature外观neat颜色White物化性质熔点 >280°C (dec.)MDL号MFCD04039905