Molecule structure of Levofloxacin carboxylic acid (CAS NO.100986-89-8):

Molecular Weight: 281.2117 g/mol
Molecular Formula: C₁₃H₉F₂NO₄ 
Density: 1.61 g/cm³ 
Melting Point: >300 °C(lit.)
Boiling Point: 459.2 °C at 760 mmHg 
Flash Point: 231.5 °C
Index of Refraction: 1.635
Molar Refractivity: 62.34 cm³
Molar Volume: 173.9 cm³
Polarizability: 24.71×10^-24 cm³
Surface Tension: 64 dyne/cm 
Enthalpy of Vaporization: 75.83 kJ/mol
Vapour Pressure: 3.14E-09 mmHg at 25 °C 
InChI: InChI=1/C13H9F2NO4/c1-5-4-20-12-9(15)8(14)2-6-10(12)16(5)3-7(11(6)17)13(18)19/h2-3,5H,4H2,1H3,(H,18,19) Copy
InChIKey: NVKWWNNJFKZNJO-UHFFFAOYAE 
Product Categories: LEVOFLOXACIN INTERMIDATE; Benzoxazines; Chiral Building Blocks; Heterocyclic Building Blocks

 Levofloxacin carboxylic acid (CAS NO.100986-89-8) is used as antimicrobial.

Hazard Codes: Xi
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing.
WGK Germany: 3

 Levofloxacin carboxylic acid (CAS NO.100986-89-8) is also named as 7H-1,4-oxazino[2,3,4-ij]quinoline-6-carboxylic acid, 9,10-difluoro-2,3-dihydro-3-methyl-7-oxo- ; 9,10-Difluoro-3-methyl-7-oxo-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid ; (S)-(-)-9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido-[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid ; 2H-1,4-Oxazino[2,3,4-i,j]quinoline-6-carboxylic acid, 3,7-dihydro-9,10-difluoro-3-methyl-7-oxo- ; 3-methyl-9,10-difluoro -2,3-dihydro-7-oxo-7H-1,4-oxazino[2,3,4-ij]quinoline-6-carboxylic acid ; 9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid .