Molecular Structure of 5-Norbornene-2-carboxylic acid (CAS NO.120-74-1):

IUPAC Name: bicyclo[2.2.1]hept-2-ene-6-carboxylic acid 
Empirical Formula: C₈H₁₀O₂
Molecular Weight: 138.1638
H bond acceptors: 2
H bond donors: 1
Freely Rotating Bonds: 1
Polar Surface Area: 37.3 Å²
Index of Refraction: 1.564
Molar Refractivity: 36.046 cm³
Molar Volume: 110.755 cm³
Surface Tension: 50.341 dyne/cm
Density: 1.247 g/cm³
Flash Point: 120.763 °C
Enthalpy of Vaporization: 55.549 kJ/mol
Boiling Point: 266.653 °C at 760 mmHg
Vapour Pressure: 0.002 mmHg at 25°C
EINECS: 204-422-8
BRN: 637167
Product Categories: Norbornene Derivatives; C8; Carbonyl Compounds; Carboxylic Acids
InChI
InChI=1/C8H10O2/c9-8(10)7-4-5-1-2-6(7)3-5/h1-2,5-7H,3-4H2,(H,9,10)
Smiles
C([C@@H]1[C@@H]2C=C[C@@H](C1)C2)(=O)O

Hazard Codes: C
Risk Statements: 34
R34:Causes burns.
Safety Statements: 26-36/37/39-45-27
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S27:Take off immediately all contaminated clothing.
RIDADR: UN 3265 8/PG 3
WGK Germany: 3

  5-Norbornene-2-carboxylic acid , with CAS number of 120-74-1, can be called bicyclo[2.2.1]hept-5-ene-2-carboxylic acid, (1R,4R)- ; (1R,4R)-bicyclo[2.2.1]hept-5-ene-2-carboxylic acid . 5-Norbornene-2-carboxylic acid (CAS NO.120-74-1) is used as intermediate of pharmaceuticals .