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The CAS register number of 2H-1-Benzopyran-2-one,7-hydroxy-3,4-dimethyl- is 2107-78-0. It also can be called as 3,4-Dimethyl-7-hydroxycoumarin and the systematic name about this chemical is 7-hydroxy-3,4-dimethyl-2H-chromen-2-one. The molecular formula about this chemical is C11H10O3 and the molecular weight is 190.2. If you want to use this chemical, do not breathe dust and avoid contact with skin and eyes.
Physical properties about 2H-1-Benzopyran-2-one,7-hydroxy-3,4-dimethyl- are: (1)ACD/LogP: 2.96; (2)#H bond acceptors: 3; (3)#H bond donors: 1; (4)#Freely Rotating Bonds: 1; (5)Polar Surface Area: 35.53 Å2; (6)Index of Refraction: 1.589; (7)Molar Refractivity: 51.05 cm3; (8)Molar Volume: 151.4 cm3; (9)Polarizability: 20.24x10-24cm3; (10)Surface Tension: 45.5 dyne/cm; (11)Density: 1.255 g/cm3; (12)Flash Point: 170.2 °C; (13)Enthalpy of Vaporization: 64.93 kJ/mol; (14)Boiling Point: 377.1 °C at 760 mmHg; (15)Vapour Pressure: 3.19E-06 mmHg at 25 °C.
Preparation: this chemical can be prepared by benzene-1,3-diol and 2-methyl-3-oxo-butyric acid ethyl ester. The yield is about 32%.
Uses of 2H-1-Benzopyran-2-one,7-hydroxy-3,4-dimethyl-: it can be used to produce 7-acetoxy-3,4-dimethyl-chromen-2-one with acetic acid anhydride. This reaction will need reagent of sodium acetate. This reaction needs heating. The yield is about 70%.
You can still convert the following datas into molecular structure:
(1)SMILES: O=C/2Oc1cc(O)ccc1\C(=C\2C)C
(2)InChI: InChI=1/C11H10O3/c1-6-7(2)11(13)14-10-5-8(12)3-4-9(6)10/h3-5,12H,1-2H3
(3)InChIKey: QEEXKPYVMOIPKR-UHFFFAOYAY
(4)Std. InChI: InChI=1S/C11H10O3/c1-6-7(2)11(13)14-10-5-8(12)3-4-9(6)10/h3-5,12H,1-2H3
(5)Std. InChIKey: QEEXKPYVMOIPKR-UHFFFAOYSA-N