The cas register number of 3-(4-Methoxyphenyl)propionaldehyde is 20401-88-1. It also can be called as Benzenepropanal,4-methoxy- and the Systematic name about this chemical is 3-(4-methoxyphenyl)propanal. 

Physical properties about 3-(4-Methoxyphenyl)propionaldehyde are: (1)ACD/LogP: 1.67; (2)ACD/LogD (pH 5.5): 2; (3)ACD/LogD (pH 7.4): 2; (4)ACD/BCF (pH 5.5): 18; (5)ACD/BCF (pH 7.4): 18; (6)ACD/KOC (pH 5.5): 274; (7)ACD/KOC (pH 7.4): 274; (8)#H bond acceptors: 2; (9)#Freely Rotating Bonds: 4; (10)Polar Surface Area: 26.3 Å²; (11)Index of Refraction: 1.503; (12)Molar Refractivity: 47.3 cm³; (13)Molar Volume: 160.078 cm³; (14)Polarizability: 18.751x10^-24cm³; (15)Surface Tension: 34.945 dyne/cm; (16)Flash Point: 104.509 °C; (17)Enthalpy of Vaporization: 49.009 kJ/mol; (18)Boiling Point: 252.727 °C at 760 mmHg; (19)Vapour Pressure: 0.019 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: O=CCCc1ccc(OC)cc1
(2)InChI: InChI=1/C10H12O2/c1-12-10-6-4-9(5-7-10)3-2-8-11/h4-8H,2-3H2,1H3
(3)InChIKey: ZOXCMZXXNOSBHU-UHFFFAOYAL
(4)Std. InChI: InChI=1S/C10H12O2/c1-12-10-6-4-9(5-7-10)3-2-8-11/h4-8H,2-3H2,1H3
(5)Std. InChIKey: ZOXCMZXXNOSBHU-UHFFFAOYSA-N