The 1-Bromo-2-Ethynylbenzene, with the CAS registry number 766-46-1, is also called Benzene, 1-bromo-2-ethynyl-. It is a kind of colourless oil, and belongs to the following product categories: Aromatic Halides (substituted); Aromatics Compounds; Aromatics; Alkynyl; Halogenated Hydrocarbons; Organic Building Blocks. And the molecular formula of the chemical is C₈H₅Br.

The characteristics of 1-Bromo-2-Ethynylbenzene are as followings: (1)ACD/LogP: 3.17; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.17; (4)ACD/LogD (pH 7.4): 3.17; (5)ACD/BCF (pH 5.5): 151.53; (6)ACD/BCF (pH 7.4): 151.53; (7)ACD/KOC (pH 5.5): 1265.94; (8)ACD/KOC (pH 7.4): 1265.94; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 0 Å²; (13)Index of Refraction: 1.604; (14)Molar Refractivity: 41.53 cm³; (15)Molar Volume: 120.6 cm³; (16)Polarizability: 16.46×10^-24cm³; (17)Surface Tension: 46 dyne/cm; (18)Density: 1.5 g/cm³; (19)Flash Point: 87.2 °C; (20)Enthalpy of Vaporization: 43.21 kJ/mol; (21)Boiling Point: 214.1 °C at 760 mmHg; (22)Vapour Pressure: 0.231 mmHg at 25°C. 

You should be cautious while dealing with this chemical. It irritates to eyes, respiratory system and skin. 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.

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: Brc1ccccc1C#C
(2)InChI: InChI=1/C8H5Br/c1-2-7-5-3-4-6-8(7)9/h1,3-6H
(3)InChIKey: RVDOYUFNRDGYGU-UHFFFAOYAY