Molecule structure of 5-Bromo-2-benzoxazolinone (CAS NO.14733-73-4):

IUPAC Name: 5-Bromo-3H-1,3-benzoxazol-2-one 
Molecular Weight: 214.01616 g/mol
Molecular Formula: C₇H₄BrNO₂ 
Density: 1.809 g/cm³ 
Melting Point: 218-222 °C(lit.)
Index of Refraction: 1.627
Molar Refractivity: 41.97 cm³
Molar Volume: 118.2 cm³
Polarizability: 16.64×10^-24 cm³
Surface Tension: 51.7 dyne/cm
XLogP3: 1.9
H-Bond Donor: 1
H-Bond Acceptor: 2
Tautomer Count: 2
Exact Mass: 212.942541
MonoIsotopic Mass: 212.942541
Topological Polar Surface Area: 38.3
Heavy Atom Count: 11
Complexity: 185
Canonical SMILES: C1=CC2=C(C=C1Br)NC(=O)O2
InChI: InChI=1S/C7H4BrNO2/c8-4-1-2-6-5(3-4)9-7(10)11-6/h1-3H,(H,9,10)
InChIKey: DMHTZWJRUUOALC-UHFFFAOYSA-N
Classification Code: Drug / Therapeutic Agent

Hazard Codes: Xn
Risk Statements: 22-36 
R22:Harmful if swallowed. 
R36:Irritating to eyes.
Safety Statements: 26 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany: 3
RTECS: DM4950000
Poison by intraperitoneal route. Moderately toxic by ingestion. When heated to decomposition it emits very toxic fumes of Br⁻ and NO_x.

 5-Bromo-2-benzoxazolinone (CAS NO.14733-73-4) is also named as 4-27-00-02684 (Beilstein Handbook Reference) ; BRN 0136259 ; 2-Benzoxazolinone, 5-bromo- . 5-Bromo-2-benzoxazolinone (CAS NO.14733-73-4) is toxic. It will produce toxic nitrogen oxide and bromides smoke by heat. So the storage environment should be ventilate, low-temperature and dry.