The 2-Pyrazinamine,3-ethynyl-, with its CAS registry number 1005349-13-2, has the systematic name of 3-Ethynylpyrazin-2-amine. And it has the molecular formula of C₆H₅N₃.

The characteristics of 2-Pyrazinamine,3-ethynyl- are as follows: (1)ACD/LogP: 0.33; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.33; (4)ACD/LogD (pH 7.4): 0.33; (5)ACD/BCF (pH 5.5): 1.05; (6)ACD/BCF (pH 7.4): 1.05; (7)ACD/KOC (pH 5.5): 36.04; (8)ACD/KOC (pH 7.4): 36.04; (9)#H bond acceptors: 3; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 51.8 Ų; (13)Index of Refraction: 1.598; (14)Molar Refractivity: 33.02 cm³; (15)Molar Volume: 96.7 cm³; (16)Polarizability: 13.09×10^-24cm³; (17)Surface Tension: 72.4 dyne/cm; (18)Density: 1.23 g/cm³; (19)Flash Point: 154.7 °C; (20)Enthalpy of Vaporization: 53.04 kJ/mol; (21)Boiling Point: 291 °C at 760 mmHg; (22)Vapour Pressure: 0.00201 mmHg at 25°C.

What's more, the following datas could be converted into the molecular structure:
(1)SMILES:C#Cc1c(nccn1)N
(2)InChI:InChI=1/C6H5N3/c1-2-5-6(7)9-4-3-8-5/h1,3-4H,(H2,7,9)
(3)InChIKey:JIXOVARXVOUXKF-UHFFFAOYAP
(4)Std. InChI:InChI=1S/C6H5N3/c1-2-5-6(7)9-4-3-8-5/h1,3-4H,(H2,7,9)
(5)Std. InChIKey:JIXOVARXVOUXKF-UHFFFAOYSA-N