The Nordiazepam-d₅, with the CAS registry number 65891-80-7, is also known as 2H-1, 4-benzodiazepin-2-one, 7-chloro-1, 3-dihydro-5-(phenyl-d₅)-. This chemical's molecular formula is C₁₅H₆ClD₅N₂O and molecular weight is 275.74. What's more, its systematic name is 7-Chloro-5-(²H₅)phenyl-1, 3-dihydro-2H-1, 4-benzodiazepin-2-one. In addition, it must be stored at 2-8 °C.

Physical properties about Nordiazepam-d₅ are: (1)ACD/LogP: 2.78; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.773; (4)ACD/LogD (pH 7.4): 2.776; (5)ACD/BCF (pH 5.5): 75.379; (6)ACD/BCF (pH 7.4): 75.763; (7)ACD/KOC (pH 5.5): 766.844; (8)ACD/KOC (pH 7.4): 770.752; (9)#H bond acceptors: 3; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 1; (12)Polar Surface Area: 41.46 Å²; (13)Index of Refraction: 1.661; (14)Molar Refractivity: 75.587 cm³; (15)Molar Volume: 204.574 cm³; (16)Polarizability: 29.965×10^-24 cm³; (17)Surface Tension: 49.69 dyne/cm; (18)Density: 1.348 g/cm³; (19)Flash Point: 227.829 °C; (20)Enthalpy of Vaporization: 71.245 kJ/mol; (21)Boiling Point: 453.103 °C at 760 mmHg; (22)Vapour Pressure: 0 mmHg at 25 °C.

When you are using this chemical, please be cautious about it as the following:
As a chemical, it is toxic by inhalation, in contact with skin and if swallowed. During using it, wear suitable protective clothing and gloves and eye/face protection. In case of accident or if you feel unwell seek medical advice immediately (show the label where possible). Besides, this chemical is highly flammable, and it may catch fire on contacting with an ignition source. Hence, keep it away from sources of ignition.

You can still convert the following datas into molecular structure:
(1) SMILES: [2H]c1c(c(c(c(c1[2H])[2H])C2=NCC(=O)Nc3c2cc(cc3)Cl)[2H])[2H]
(2) InChI: InChI=1/C15H11ClN2O/c16-11-6-7-13-12(8-11)15(17-9-14(19)18-13)10-4-2-1-3-5-10/h1-8H,9H2,(H,18,19)/i1D,2D,3D,4D,5D
(3) InChIKey: AKPLHCDWDRPJGD-RALIUCGREH