The Molecular Structure of 1,3-Benzenedicarboxylic acid, 5-bromo-, 1,3-dimethyl ester (CAS NO.51760-21-5):

Empirical Formula: C₁₀H₉BrO₄
Molecular Weight: 273.0801 
IUPAC Name: dimethyl 5-bromobenzene-1,3-dicarboxylate
Appearance:
Nominal Mass: 272 Da
Average Mass: 273.0801 Da
Monoisotopic Mass: 271.968414 Da 
Index of Refraction: 1.546
Molar Refractivity: 57.48 cm³
Molar Volume: 181.4 cm³
Surface Tension: 44 dyne/cm
Density: 1.505 g/cm³
Flash Point: 146.8 °C
Enthalpy of Vaporization: 56.06 kJ/mol
Boiling Point: 319.1 °C at 760 mmHg
Vapour Pressure: 0.000347 mmHg at 25°C 
InChI
InChI=1/C10H9BrO4/c1-14-9(12)6-3-7(10(13)15-2)5-8(11)4-6/h3-5H,1-2H3 
Smiles
O=C(OC)c1cc(cc(C(=O)OC)c1)Br

Hazard Codes: TXi
Risk Statements: 25 
R25 : Toxic if swallowed
Safety Statements: 45 
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR: UN 2811 6.1/PG 3
WGK Germany: 3
HazardClass: irritant

 1,3-Benzenedicarboxylic acid, 5-bromo-, 1,3-dimethyl ester (CAS NO.51760-21-5) is also called as 5-Bromoisophthalic acid, dimethyl ester ; Dimethyl 5-bromoisophthalate ; 1,3-Benzenedicarboxylic acid, 5-bromo-, dimethyl ester .