Levofloxacin carboxylic acid

左旋氧氟沙星羧酸

Also known as: 9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-(3S)-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid, Levofloxacin Q-Acid, Levofloxacin Impurity 3, Levofloxacin Related Compound B, (S)-(-)-9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid, 7H-Pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid, 9,10-difluoro-2,3-dihydro-3-methyl-7-oxo-, (3S)-, Levofluorocarboxylic acid, MFCD04039905

Levofloxacin carboxylic acid (CAS 100986-89-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H9F2NO4 and a molecular weight of 281.212 g/mol. It is also known as 9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-(3S)-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid, Levofloxacin Q-Acid and Levofloxacin Impurity 3. Key properties include a melting point of >300 °C(lit.), a boiling point of 459.2±45.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 231.5±28.7 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

100986-89-8

Jingsj CID

J-2748-1

Molecular Formula

C₁₃H₉F₂NO₄

Chinese Name

左旋氧氟沙星羧酸

Molecular Weight

281.212 g/mol

Category

Organic Acids

Last updated

8/21/2026