The CAS register number of 3-Chloro-5-ethynylpyridine is 329202-22-4. It also can be called as Pyridine,3-chloro-5-ethynyl- and the systematic name about this chemical is 3-chloro-5-ethynylpyridine. The molecular formula about this chemical is C₇H₄ClN and molecular weight is 137.57. It belongs to the Pyridine.

Physical properties about 3-Chloro-5-ethynylpyridine are: (1)ACD/LogP: 2.05; (2)ACD/LogD (pH 5.5): 2; (3)ACD/LogD (pH 7.4): 2; (4)ACD/BCF (pH 5.5): 13; (5)ACD/BCF (pH 7.4): 13; (6)ACD/KOC (pH 5.5): 214; (7)ACD/KOC (pH 7.4): 214; (8)#H bond acceptors: 1; (9)Polar Surface Area: 12.89Ų; (10)Index of Refraction: 1.567; (11)Molar Refractivity: 36.44 cm³; (12)Molar Volume: 111.621 cm³; (13)Polarizability: 14.446X10^-24cm³; (14)Surface Tension: 49.341 dyne/cm; (15)Enthalpy of Vaporization: 42.567 kJ/mol; (16)Boiling Point: 207.533 °C at 760 mmHg; (17)Vapour Pressure: 0.322 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: C#Cc1cncc(Cl)c1
(2)InChI: InChI=1/C7H4ClN/c1-2-6-3-7(8)5-9-4-6/h1,3-5H
(3)InChIKey: MZOIQYPOUQWDQZ-UHFFFAOYAR
(4)Std. InChI: InChI=1S/C7H4ClN/c1-2-6-3-7(8)5-9-4-6/h1,3-5H
(5)Std. InChIKey: MZOIQYPOUQWDQZ-UHFFFAOYSA-N