The 4H-1-Benzopyran-2-carboxylicacid, 5-hydroxy-4-oxo-, with the CAS registry number 53878-47-0, is also known as 5-Hydroxy-2-chromonecarboxylicacid. This chemical's molecular formula is C₁₀H₆O₅ and molecular weight is 206.15164. What's more, its systematic name is 5-Hydroxy-4-oxo-4H-chromene-2-carboxylic acid.

Physical properties about 4H-1-Benzopyran-2-carboxylicacid, 5-hydroxy-4-oxo- are: (1)ACD/LogP: 1.19; (2)# of Rule of 5 Violations: 0; (3)ACD/BCF (pH 5.5): 1; (4)ACD/BCF (pH 7.4): 1; (5)ACD/KOC (pH 5.5): 1; (6)ACD/KOC (pH 7.4): 1; (7)#H bond acceptors: 5; (8)#H bond donors: 2; (9)#Freely Rotating Bonds: 2; (10)Polar Surface Area: 61.83 Å²; (11)Index of Refraction: 1.684; (12)Molar Refractivity: 47.75 cm³; (13)Molar Volume: 125.7 cm³; (14)Polarizability: 18.93×10^-24 cm³; (15)Surface Tension: 82.7 dyne/cm; (16)Density: 1.639 g/cm³; (17)Flash Point: 169.7 °C; (18)Enthalpy of Vaporization: 69.65 kJ/mol; (19)Boiling Point: 408.5 °C at 760 mmHg; (20)Vapour Pressure: 2.09E-07 mmHg at 25 °C.

You can still convert the following datas into molecular structure:
(1) SMILES: O=C\1c2c(O/C(=C/1)C(=O)O)cccc2O
(2) InChI: InChI=1/C10H6O5/c11-5-2-1-3-7-9(5)6(12)4-8(15-7)10(13)14/h1-4,11H,(H,13,14)
(3) InChIKey: WXAWTEGETBBUTP-UHFFFAOYAQ