Molecular structure of m-Cyanobenzoic acid (CAS NO.1877-72-1) is:

Product Name: m-Cyanobenzoic acid
CAS Registry Number: 1877-72-1
IUPAC Name: 3-Cyanobenzoic acid
Molecular Weight: 147.1308 [g/mol]
Molecular Formula: C₈H₅NO₂
XLogP3: 1.5
H-Bond Donor: 1
H-Bond Acceptor: 3 
EINECS: 217-511-1
Melting Point: 220-224 °C(lit.) 
Surface Tension: 63.5 dyne/cm
Density: 1.32 g/cm³
Flash Point: 150.1 °C
Enthalpy of Vaporization: 59.82 kJ/mol
Boiling Point: 324.7 °C at 760 mmHg
Vapour Pressure: 9.9E-05 mmHg at 25°C
Product Categories: Carboxylicacid; Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts; Organic acids

 m-Cyanobenzoic acid (CAS NO.1877-72-1) is used for synthetic organic intermediates.

Safty information about m-Cyanobenzoic acid (CAS NO.1877-72-1) is:
Hazard Codes: Xi,Xn
Risk Statements: 36/37/38-20/21/22 
R36/37/38:Irritating to eyes, respiratory system and skin. 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed.
Safety Statements: 26-36-22
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing. 
S22:Do not breathe dust.
RIDADR: 3439
WGK Germany: 3
HazardClass: 6.1
PackingGroup: III

 m-Cyanobenzoic acid , its cas register number is 1877-72-1. It also can be called (3-Nitrophenyl)phenylmethanone ; 3-Carboxybenzonitrile ; m-Carboxybenzonitrile ; m-Cyanobenzoic acid ; m-Nitrobenzophenone . It is a white powder.