This chemical is called Pyridine-D5, and its systematic name is (2H₅)pyridine. With the molecular formula of C₅D₅N, its molecular weight is 84.13. The CAS registry number of this chemical is 7291-22-7. Additionally, this chemical is clear colorless liquid.

Other characteristics of the Pyridine-D5 can be summarised as followings: (1)ACD/LogP: 0.73; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.54; (4)ACD/LogD (pH 7.4): 0.72; (5)ACD/BCF (pH 5.5): 1.37; (6)ACD/BCF (pH 7.4): 2.08; (7)ACD/KOC (pH 5.5): 38.58; (8)ACD/KOC (pH 7.4): 58.76; (9)#H bond acceptors: 1; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 12.89 Å²; (13)Index of Refraction: 1.5; (14)Molar Refractivity: 24.34 cm³; (15)Molar Volume: 82.6 cm³; (16)Polarizability: 9.65×10^-24cm³; (17)Surface Tension: 35.2 dyne/cm; (18)Density: 1.017 g/cm³; (19)Flash Point: 20 °C; (20)Enthalpy of Vaporization: 35.09 kJ/mol; (21)Boiling Point: 115.3 °C at 760 mmHg; (22)Vapour Pressure: 22.8 mmHg at 25°C.

Uses of this chemical: The C₁₀H₉(2)H₅N(1+)*Br(1-) could be obtained by the reactants of Pyridine-D5 and 1-bromo-3-methyl-but-2-ene. This reaction needs the solvent of diethyl ether. The yield is 70 %. This reaction should be taken for 12 hours at the temperature of 25 °C.

When you are using this chemical, please be cautious about it as the following: This chemical is highly flammable. It's harmful and toxic by inhalation, in contact with skin and if swallowed. It's possible risk of harm to the unborn child. It may cause cancer. Avoid contacting with skin and eyes. Do not breathe vapour. In case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.   

You can still convert the following datas into molecular structure: 
1.SMILES: [2H]c1c([2H])c([2H])nc([2H])c1[2H]
2.InChI: InChI=1/C5H5N/c1-2-4-6-5-3-1/h1-5H/i1D,2D,3D,4D,5D
3.InChIKey: JUJWROOIHBZHMG-RALIUCGREV