The 3H-1,2,4-Triazole-3-thione,2,4-dihydro-4-methyl-5-(phenylmethyl)-, with the CAS registry number 51291-31-7, is also known as 5-Benzyl-4-methyl-2,4-dihydro-3H-1,2,4-triazole-3-thione. This chemical's molecular formula is C₁₀H₁₁N₃S and molecular weight is 205.28. What's more, its systematic name is 5-Benzyl-4-methyl-4H-1,2,4-triazole-3-thiol. 

Physical properties of 3H-1,2,4-Triazole-3-thione,2,4-dihydro-4-methyl-5-(phenylmethyl)- are: (1)ACD/LogP: 0.60; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.2; (4)ACD/LogD (pH 7.4): 0.41; (5)ACD/BCF (pH 5.5): 2.57; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 32.69; (8)ACD/KOC (pH 7.4): 5.36; (9)#H bond acceptors: 3; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 50.93 Å²; (13)Index of Refraction: 1.659; (14)Molar Refractivity: 60.73 cm³; (15)Molar Volume: 164.5 cm³; (16)Polarizability: 24.07×10^-24 cm³; (17)Surface Tension: 44.8 dyne/cm; (18)Density: 1.24 g/cm³; (19)Flash Point: 135.5 °C; (20)Enthalpy of Vaporization: 54.04 kJ/mol; (21)Boiling Point: 300.4 °C at 760 mmHg; (22)Vapour Pressure: 0.00112 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: CN1C(=NNC1=S)CC2=CC=CC=C2
(2)InChI: InChI=1S/C10H11N3S/c1-13-9(11-12-10(13)14)7-8-5-3-2-4-6-8/h2-6H,7H2,1H3,(H,12,14)
(3)InChIKey: MJOLNPWSILTXMX-UHFFFAOYSA-N