This chemical is called 1-Butene-1,1-d₂, and its systematic name is (1,1-²H₂)But-1-ene. With the molecular formula of C₄H₆D₂, its molecular weight is 58.12. The CAS registry number of this chemical is 26119-76-6.

Other characteristics of the 1-Butene-1,1-d₂ can be summarised as followings: (1)ACD/LogP: 2.34; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.337; (4)ACD/LogD (pH 7.4): 2.337; (5)ACD/BCF (pH 5.5): 35.149; (6)ACD/BCF (pH 7.4): 35.149; (7)ACD/KOC (pH 5.5): 444.817; (8)ACD/KOC (pH 7.4): 444.817; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 1; (12)Index of Refraction: 1.371; (13)Molar Refractivity: 20.306 cm³; (14)Molar Volume: 89.656 cm³; (15)Polarizability: 8.05×10^-24cm³; (16)Surface Tension: 16.354 dyne/cm; (17)Density: 0.648 g/cm³; (18)Flash Point: °C; (19)Enthalpy of Vaporization: 22.07 kJ/mol; (20)Boiling Point: °C at 760 mmHg; (21)Vapour Pressure: 2213.905 mmHg at 25°C.

You can still convert the following datas into molecular structure: 
1.SMILES: [2H]C(=CCC)[2H]
2.InChI: InChI=1/C4H8/c1-3-4-2/h3H,1,4H2,2H3/i1D2
3.InChIKey: VXNZUUAINFGPBY-DICFDUPAET