IUPAC Name: 7-methoxy-4-oxo-1H-quinoline-3-carboxylic acid 
Empirical Formula: C₁₁H₉NO₄
Molecular Weight: 219.1935g/mol
Structure of 3-Quinolinecarboxylicacid, 4-hydroxy-7-methoxy- (CAS NO.28027-17-0):

Index of Refraction: 1.611
Molar Refractivity: 54.29 cm³
Molar Volume: 156.3 cm³
Polarizability: 21.52×10^-24cm³
Surface Tension: 57.6 dyne/cm
Density: 1.402 g/cm³
Flash Point: 200 °C
Enthalpy of Vaporization: 69.48 kJ/mol
Boiling Point: 407.1 °C at 760 mmHg
Vapour Pressure: 2.34E-07 mmHg at 25°C 
Canonical SMILES: COC1=CC2=C(C=C1)C(=O)C(=CN2)C(=O)O
InChI: InChI=1S/C11H9NO4/c1-16-6-2-3-7-9(4-6)12-5-8(10(7)13)11(14)15/h2-5H,1H3,(H,12,13)(H,14,15)
InChIKey: QROPNBKULZRDMD-UHFFFAOYSA-N

Hazard Codes: Xi
Risk Statements: 20/21/22 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed.
Safety Statements: 22-24/25
S22:Do not breathe dust. 
S24/25:Avoid contact with skin and eyes.
Hazard Note: Irritant

  3-Quinolinecarboxylicacid, 4-hydroxy-7-methoxy- , its cas register number is 28027-17-0. It also can be called 4-Hydroxy-7-methoxyquinoline-3-carboxylic acid ; Hydroxymethoxyquinolinecarboxylicacid . 3-Quinolinecarboxylicacid, 4-hydroxy-7-methoxy- (CAS NO.28027-17-0) is harmful by inhalation, in contact with skin and if swallowed.