The 9-Methoxy-alpha-lapachone, with CAS registry number 35241-80-6, has the systematic name of 9-methoxy-2,2-dimethyl-3,4-dihydro-2H-benzo[g]chromene-5,10-dione. Its molecular weight is 272.2958. And the chemical formula of this chemical is C₁₆H₁₆O₄.

Physical properties of 9-Methoxy-alpha-lapachone: (1)ACD/LogP: 3.04; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 4; (4)#H bond donors: 0; (5)#Freely Rotating Bonds: 1; (6)Polar Surface Area: 52.6 Å²; (7)Index of Refraction: 1.584; (8)Molar Refractivity: 72.13 cm³; (9)Molar Volume: 215.5 cm³; (10)Polarizability: 28.59×10^-24cm³; (11)Surface Tension: 48.6 dyne/cm; (12)Density: 1.26 g/cm³; (13)Flash Point: 194.3 °C; (14)Enthalpy of Vaporization: 69.14 kJ/mol; (15)Boiling Point: 435.2 °C at 760 mmHg; (16)Vapour Pressure: 8.93E-08 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C2c3c(C(=O)\C1=C2\OC(CC1)(C)C)cccc3OC
(2)InChI: InChI=1/C16H16O4/c1-16(2)8-7-10-13(17)9-5-4-6-11(19-3)12(9)14(18)15(10)20-16/h4-6H,7-8H2,1-3H3
(3)InChIKey: PZZDIQYEWIHAEX-UHFFFAOYAF
(4)Std. InChI: InChI=1S/C16H16O4/c1-16(2)8-7-10-13(17)9-5-4-6-11(19-3)12(9)14(18)15(10)20-16/h4-6H,7-8H2,1-3H3
(5)Std. InChIKey: PZZDIQYEWIHAEX-UHFFFAOYSA-N