The 4-Iodocinnamic acid , its cas register number is 34633-09-5. The Systematic name about this chemicals is (2E)-3-(4-iodophenyl)prop-2-enoic acid  .Following are the physical and chemical properties about it: (1)Index of Refraction: 1.696 (2)Molar Refractivity: 56.61 cm³ (3)Molar Volume: 147.1 cm³ (4)Surface Tension: 58.9 dyne/cm (5)Enthalpy of Vaporization: 64.14 kJ/mol (6)Vapour Pressure: 7.13E-06 mmHg at 25 °C  . It belongs to the following product categories, such as Aromatic Cinnamic Acids, Esters and Derivatives, Acids & Esters and Iodine Compounds.

This chemicals can be described computed from structure: 
1) SMILES: Ic1ccc(/C=C/C(=O)O)cc1
2) InChI: InChI=1/C9H7IO2/c10-8-4-1-7(2-5-8)3-6-9(11)12/h1-6H,(H,11,12)/b6-3+ 
3) InChIKey: NIDLJAPEZBFHGP-ZZXKWVIFBZ