The CAS registry number of 2(1H)-Quinolinone,4-hydroxy-3-[2-[4-(2-phenyldiazenyl)phenyl]diazenyl]- is 54077-16-6. The IUPAC name is 4-hydroxy-3-{[4-(phenyldiazenyl)phenyl]diazenyl}quinolin-2(1H)-one. In addition, the molecular formula is C₂₁H₁₅N₅O₂ and molecular weight is 369.38. It should be stored in a cool and dry place.

Physical properties of 2(1H)-Quinolinone,4-hydroxy-3-[2-[4-(2-phenyldiazenyl)phenyl]diazenyl]- are: (1)ACD/LogP: 4.28; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.96; (4)ACD/LogD (pH 7.4): 1.26; (5)ACD/BCF (pH 5.5): 50.94; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 245.6; (8)ACD/KOC (pH 7.4): 4.82; (9)#H bond acceptors: 7; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 5; (12)Polar Surface Area: 98.77 Å²; (13)Index of Refraction: 1.699; (14)Molar Refractivity: 106.1 cm³; (15)Molar Volume: 274.5 cm³; (16)Polarizability: 42.06 ×10^-24cm³; (17)Surface Tension: 57.5 dyne/cm; (18)Density: 1.34 g/cm³; (19)Flash Point: 325.2 °C; (20)Enthalpy of Vaporization: 95.81 kJ/mol; (21)Boiling Point: 614.1 °C at 760 mmHg; (22)Vapour Pressure: 6.15E-16 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: c1ccc(cc1)N=Nc2ccc(cc2)N=Nc3c(c4ccccc4[nH]c3=O)O
(2)InChI: InChI=1/C21H15N5O2/c27-20-17-8-4-5-9-18(17)22-21(28)19(20)26-25-16-12-10-15(11-13-16)24-23-14-6-2-1-3-7-14/h1-13H,(H2,22,27,28)
(3)InChIKey: GZCKCZAMIMLHDK-UHFFFAOYAE