Pyridine,3-[2-(trimethylsilyl)ethynyl]- (80673-00-3)

     3-[(Trimethylsilyl)ethynyl]pyridine ,with the CAS registry number 80673-00-3, has IUPAC names 3-[2-(trimethylsilyl)ethynyl]pyridine . And it is also known to us as 3-(TRIMETHYLSILYLETHYNYL)PYRIDINE ,(3-PYRIDYLETHYNYL)TRIMETHYLSILANE ,1-(3-PYRIDYL)-2-TRIMETHYLSILYLACETYLENE , and 3-(TRIMETHYLSILYLETHYNYL)PYRI , etc.

     As for the physical properties, it has the molar refractivity of 54.46 cm³ and molar volume of 184.1 cm³. Besides, its Enthalpy of Vaporization is 43.58 kJ/mol and vapour pressure is 0.19 mmHg at 25°C.

     3-[(Trimethylsilyl)ethynyl]pyridine is a kind of transparent liquid, and it has the demanding conserving way which need to be preserved in the freezer. And it is usually being used in the laborary as the chemical reagent and the medical intermediate.
Being a kind of irritant chemical to eyes, respiratory system and skin, it may cause inflammation to the skin or other mucous membranes.While contacting, be sure to wear suitable protective clothing. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 

      And you could also find the chemical molecular structure by using the following data:
SMILES:
C(#Cc1cccnc1)[Si](C)(C)C
InChI:
InChI=1/C10H13NSi/c1-12(2,3)8-6-10-5-4-7-11-9-10/h4-5,7,9H,1-3H3