í+product nameí+ Levofloxacin acid ester Chemical name Ethyl (s)-9, 10-difluoro-3-methyl-7-oxo-2, 3-dihydro-7h-pyrido[1, 2, 3-de]-1, 4-benzoxazine-6-carboxylate Product brief introduction This product is a main raw material of synthesis of levofloxacin drug. Molecular structure Molecular formula C15h13f2no4 Molecular weight 309.26 Cas-no. 106939-34-8 Product specification Appearanceú¦ white or off-white powder Assayú¦ í²99% (hplc) Loss on dryingú¦ ín0.5% Residue on ignitionú¦ ín0.5% Single impurity: ín0.5% Specific rotation: ín-68.0o~ -72.0o Dextral isomer ín0.2% 25kg/drum.
