The 7H-Furo[3,2-g][1]benzopyran-7-one,9-hydroxy-, with the CAS registry number 2009-24-7, is also known as Xanthotoxol. Its EINECS number is 217-923-1 and its systematic name is 9-Hydroxy-7H-furo[3,2-g]chromen-7-one. This chemical's molecular formula is C₁₁H₆O₄ and molecular weight is 202.16. What's more, it belongs to the product categories of Coumarins; API intermediates and its classification code is Drug / Therapeutic Agent. 

Physical properties of 7H-Furo[3,2-g][1]benzopyran-7-one,9-hydroxy- are: (1)ACD/LogP: 0.72; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.53; (4)ACD/LogD (pH 7.4): -0.93; (5)ACD/BCF (pH 5.5): 1.32; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 37.37; (8)ACD/KOC (pH 7.4): 1.3; (9)#H bond acceptors: 4; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 1; (12)Polar Surface Area: 48.67 Å²; (13)Index of Refraction: 1.71; (14)Molar Refractivity: 51.79 cm³; (15)Molar Volume: 132.4 cm³; (16)Polarizability: 20.53×10^-24 cm³; (17)Surface Tension: 68.4 dyne/cm; (18)Density: 1.526 g/cm³; (19)Flash Point: 212.7 °C; (20)Enthalpy of Vaporization: 70.96 kJ/mol; (21)Boiling Point: 428.1 °C at 760 mmHg; (22)Vapour Pressure: 6.22E-08 mmHg at 25°C.

Preparation: this chemical can be prepared by 9-methoxy-furo[3,2-g]chromen-7-one at the temperature of 0 °C. This reaction will need reagent BBr₃ and solvent CH₂Cl₂ with the reaction time of 2 hours. The yield is about 71%.

Uses of 7H-Furo[3,2-g][1]benzopyran-7-one,9-hydroxy-: it can be used to produce (7-oxo-7H-furo[3,2-g]chromen-9-yloxy)-acetic acid ethyl ester at the temperature of 20 °C. It will need reagent K₂CO₃ and solvent dimethylformamide with the reaction time of 4 hours. The yield is about 81%.

When you are using this chemical, please be cautious about it as the following:
It is toxic if swallowed. In case of accident or if you feel unwell, you need seek medical advice immediately and show the label where possible. When using it, can't eat or drink it.

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: C1=CC(=O)OC2=C(C3=C(C=CO3)C=C21)O
(2)InChI: InChI=1S/C11H6O4/c12-8-2-1-6-5-7-3-4-14-10(7)9(13)11(6)15-8/h1-5,13H
(3)InChIKey: JWVYQQGERKEAHW-UHFFFAOYSA-N

The toxicity data is as follows: