The IUPAC name of 3-Ethynyltoluene is 1-ethynyl-3-methylbenzene. With the CAS registry number 766-82-5, it is also named as 3-Methylphenylacetylene. The product's categories are Acetylenes; Acetylenic Hydrocarbons; Alkynes; Organic Building Blocks; Terminal. It is clear light yellow to brown liquid which is stable under normal temperature and pressure. Additionally, this chemical should be sealed in the container and stored in the cool and dry place.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 2.86; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.86; (4)ACD/LogD (pH 7.4): 2.86; (5)ACD/BCF (pH 5.5): 87.83; (6)ACD/BCF (pH 7.4): 87.83; (7)ACD/KOC (pH 5.5): 856.8; (8)ACD/KOC (pH 7.4): 856.8; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Index of Refraction: 1.534; (13)Molar Refractivity: 38.43 cm³; (14)Molar Volume: 123.6 cm³; (15)Polarizability: 15.23×10^-24 cm³; (16)Surface Tension: 35.3 dyne/cm; (17)Enthalpy of Vaporization: 39.57 kJ/mol; (18)Vapour Pressure: 1.48 mmHg at 25°C; (19)Rotatable Bond Count: 1; (20)Exact Mass: 116.0626; (21)MonoIsotopic Mass: 116.0626; (22)Heavy Atom Count: 9; (23)Complexity: 126.

Preparation of 3-Ethynyltoluene: It can be obtained by 1-(1,1-dichloro-ethyl)-3-methyl-benzene. This reaction needs reagent KOH and solvent ethanol by heating. The yield is 46%.

Uses of 3-Ethynyltoluene: It can react with 2-trimethylsilanylethynyl-benzaldehyde to get 3-m-tolyl-1-(2-trimethylsilanylethynyl-phenyl)-prop-2-yn-1-ol. This reaction needs reagent n-BuLi and solvent tetrahydrofuran at temperature of 0 °C. The yield is 54%.

When you are using this chemical, please be cautious about it as the following:
It is flammable, so people should keep it away from sources of ignition. It is also irritating to eyes, respiratory system and skin. And it may cause lung damage if swallowed. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing.

People can use the following data to convert to the molecule structure. 
1. SMILES:C#Cc1cccc(c1)C
2. InChI:InChI=1/C9H8/c1-3-9-6-4-5-8(2)7-9/h1,4-7H,2H3 
3. InChIKey:RENYIDZOAFFNHC-UHFFFAOYAT