The CAS register number of 2H-1-Benzopyran-2-one,4,7-dihydroxy-3-phenyl- is 19225-17-3. It also can be called as 3-Phenyl-4,7-dihydroxycoumarin and the IUPAC name about this chemical is 2,7-dihydroxy-3-phenylchromen-4-one. The molecular formula about this chemical is C₁₅H₁₀O₄ and the molecular weight is 254.2375.

Physical properties about 2H-1-Benzopyran-2-one,4,7-dihydroxy-3-phenyl- are: (1)ACD/LogP: 3.65; (2)ACD/LogD (pH 5.5): 2; (3)ACD/BCF (pH 5.5): 6; (4)ACD/BCF (pH 7.4): 1; (5)ACD/KOC (pH 5.5): 57; (6)ACD/KOC (pH 7.4): 1; (7)#H bond acceptors: 4; (8)#H bond donors: 2; (9)#Freely Rotating Bonds: 3; (10)Polar Surface Area: 66.76 Å²; (11)Index of Refraction: 1.713; (12)Molar Refractivity: 67.675 cm³; (13)Molar Volume: 172.683 cm³; (14)Polarizability: 26.828x10^-24cm³; (15)Surface Tension: 72.711 dyne/cm; (16)Density: 1.472 g/cm³; (17)Flash Point: 200.652 °C; (18)Enthalpy of Vaporization: 82.386 kJ/mol; (19)Boiling Point: 511.48 °C at 760 mmHg.

You can still convert the following datas into molecular structure:
(1)SMILES: Oc1ccc2c(c1)OC(=O)/C(=C2/O)c3ccccc3
(2)InChI: InChI=1/C15H10O4/c16-10-6-7-11-12(8-10)19-15(18)13(14(11)17)9-4-2-1-3-5-9/h1-8,16-17H
(3)InChIKey: APFWLFUGBMRXCS-UHFFFAOYAI
(4)Std. InChI: InChI=1S/C15H10O4/c16-10-6-7-11-12(8-10)19-15(18)13(14(11)17)9-4-2-1-3-5-9/h1-8,16-17H
(5)Std. InChIKey: APFWLFUGBMRXCS-UHFFFAOYSA-N

The toxicity data are as follows: