Product name Levofloxacin carboxylic acid Chemical name 9, 10-difluoro-2, 3-dihydro-3-methyl-7-oxo-(3s)-7h-pyrido[1, 2, 3-de]-1, 4-benzoxazine-6-carboxylic acid Product brief introduction This product is a main raw material of synthesis of levofloxacin series drug. Molecular structure Molecular formula C13h9f2no4 Molecular weight 281.21 Cas-no. 100986-89-8 Product specification Appearanceú¦ white or off-white powder Assayú¦ í²99% Single impurityú¦ ín0.5% Loss on dryingú¦ ín0.5% Residue on ignitionú¦ ín0.5% Specific rotation: -70.0o~-78.0o Dextral isomer: ín0.2% 25kg/drum