</

美国药典标准品#1362114,左氧氟沙星相关化合物A,Levofloxacin Related Compound A (25 mg) ((S)-9-fluoro-3-methyl-10-(piperazin-1-yl)-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid),CAS#117707-40-1