Levocetirizine EP Impurity F

(3S)-9, 10-Difluoro-2, 3-dihydro-3-methyl-7-oxo-7H-pyrido[1, 2, 3-de]-1, 4-benzoxazine-6-carboxylic Acid; Levofloxacin Q-Acid; USP Levofloxacin Related Compound B;