The Naphthol AS-PH, with the CAS registry number 92-74-0 and EINECS registry number 202-185-5, has the systematic name of N-(2-ethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide. It belongs to the product category of Intermediates of Dyes and Pigments. And the molecular formula of this chemical is C₁₉H₁₇NO₃. What's more, it is often used as printing and dyeing grounding agent for cotton fabric.

The physical properties of Naphthol AS-PH are as following: (1)ACD/LogP: 4.93; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 4.93; (4)ACD/LogD (pH 7.4): 4.89; (5)ACD/BCF (pH 5.5): 3279.49; (6)ACD/BCF (pH 7.4): 3027; (7)ACD/KOC (pH 5.5): 11430.18; (8)ACD/KOC (pH 7.4): 10550.16; (9)#H bond acceptors: 4; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 5; (12)Polar Surface Area: 38.77 Å²; (13)Index of Refraction: 1.686; (14)Molar Refractivity: 91.86 cm³; (15)Molar Volume: 241.3 cm³; (16)Polarizability: 36.41×10^-24cm³; (17)Surface Tension: 56.6 dyne/cm; (18)Density: 1.273 g/cm³; (19)Flash Point: 217.6 °C; (20)Enthalpy of Vaporization: 71.93 kJ/mol; (21)Boiling Point: 436.2 °C at 760 mmHg; (22)Vapour Pressure: 3.23E-08 mmHg at 25°C.

Uses of Naphthol AS-PH: It can react with 11-amino-3-bromo-13H-acenaphtho[1,2-e]pyridazino[3,2-b]quinazoline-13-one to produce C₄₀H₂₅BrN₆O₄. This reaction will need reagent NaNO₂ and HCl, and the solvent alkaline aq. solution. The reaction temperature is 0-5°C, and the yield is about 72%.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C(c2cc1ccccc1cc2O)Nc3ccccc3OCC
(2)InChI: InChI=1/C19H17NO3/c1-2-23-18-10-6-5-9-16(18)20-19(22)15-11-13-7-3-4-8-14(13)12-17(15)21/h3-12,21H,2H2,1H3,(H,20,22)
(3)InChIKey: NXIGDUAONGBUKR-UHFFFAOYAJ