The 1,3-Benzenediol,4-[2-(9H-fluoren-2-yl)diazenyl]-, with the CAS registry number 63020-83-7, is also known as Fluorene-2-azo-2',4'-dihydroxybenzene. It belongs to the product categories of Fluorenes; Fluorenes & Fluorenones. This chemical's molecular formula is C₁₉H₁₄N₂O₂ and molecular weight is 302.33. What's more, its systematic name is 4-[(E)-9H-Fluoren-2-yldiazenyl]benzene-1,3-diol. It is stable at common pressure and temperature, and it should be sealed and stored in containers which are placed in cool, ventilated and dry places. What's more, it should be protected from oxidizers, sunlight, heat and fire.

Physical properties of 1,3-Benzenediol,4-[2-(9H-fluoren-2-yl)diazenyl]- are: (1)ACD/LogP: 4.39; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 4.38; (4)ACD/LogD (pH 7.4): 4.34; (5)ACD/BCF (pH 5.5): 1265.04; (6)ACD/BCF (pH 7.4): 1138.86; (7)ACD/KOC (pH 5.5): 5779.78; (8)ACD/KOC (pH 7.4): 5203.28; (9)#H bond acceptors: 4; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 4; (12)Polar Surface Area: 65.18 Å²; (13)Index of Refraction: 1.694; (14)Molar Refractivity: 87.72 cm³; (15)Molar Volume: 228.3 cm³; (16)Polarizability: 34.77×10^-24 cm³; (17)Surface Tension: 54.2 dyne/cm; (18)Density: 1.32 g/cm³; (19)Flash Point: 381.3 °C; (20)Enthalpy of Vaporization: 87.72 kJ/mol; (21)Boiling Point: 562.6 °C at 760 mmHg; (22)Vapour Pressure: 2.92E-13 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: Oc4ccc(/N=N/c1ccc2c3ccccc3Cc2c1)c(O)c4
(2)InChI: InChI=1S/C19H14N2O2/c22-15-6-8-18(19(23)11-15)21-20-14-5-7-17-13(10-14)9-12-3-1-2-4-16(12)17/h1-8,10-11,22-23H,9H2/b21-20+
(3)InChIKey: PPZSYIWWKUVZLX-QZQOTICOSA-N