The Butanoic-d7 acid (9CI), with the CAS registry number 73607-83-7, has the systematic name of 2,2,3,3,4,4,4-heptadeuteriobutanoic acid. It is a kind of organics, and should be stored in the dry and cool environment. And the molecular formula of the chemical is C₄HD₇O₂.

The characteristics of Butanoic-d7 acid (9CI) are as followings: (1)ACD/LogP: 0.78; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 2; (4)#H bond donors: 1; (5)#Freely Rotating Bonds: 2; (6)Polar Surface Area: 37.3 Å²; (7)Index of Refraction: 1.411; (8)Molar Refractivity: 22.14 cm³; (9)Molar Volume: 89.1 cm³; (10)Polarizability: 8.77×10^-24cm³; (11)Surface Tension: 32.5 dyne/cm; (12)Density: 1.066 g/cm³; (13)Flash Point: 69.7 °C; (14)Enthalpy of Vaporization: 42.39 kJ/mol; (15)Boiling Point: 164.3 °C at 760 mmHg; (16)Vapour Pressure: 1.35 mmHg at 25°C.

You should be cautious while dealing with this chemical. It may cause burns. Therefore, you had better take the following instructions: Wear suitable protective clothing, and if in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice. What's more, if in case of accident or if you feel unwell, seek medical advice immediately (show label where possible). 

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: [2H]C([2H])(C([2H])([2H])C(O)=O)C([2H])([2H])[2H]
(2)InChI: InChI=1/C4H8O2/c1-2-3-4(5)6/h2-3H2,1H3,(H,5,6)/i1D3,2D2,3D2
(3)InChIKey: FERIUCNNQQJTOY-NCKGIQLSET