The Hexanoic acid, 3-oxo-,ethyl ester, with the CAS registry number 3249-68-1 and EINECS registry number 221-835-9, has the systematic and IUPAC name of ethyl 3-oxohexanoate. It is a kind of colourless liquid, and belongs to the following product categories: Pharmaceutical Intermediates; Building Blocks. And the molecular formula of the chemical is C₈H₁₄O₃. What's more, while dealing with this chemical, you should avoid contacting with skin and eyes.

The characteristics of Hexanoic acid, 3-oxo-,ethyl ester are as followings: (1)ACD/LogP: 1.78; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 3; (4)#H bond donors: 0; (5)#Freely Rotating Bonds: 6; (6)Polar Surface Area: 43.37 Å²; (7)Index of Refraction: 1.421; (8)Molar Refractivity: 40.91 cm³; (9)Molar Volume: 161.1 cm³; (10)Polarizability: 16.22×10^-24cm³; (11)Surface Tension: 30.9 dyne/cm; (12)Density: 0.981 g/cm³; (13)Flash Point: 78.3 °C; (14)Enthalpy of Vaporization: 44.22 kJ/mol; (15)Boiling Point: 206 °C at 760 mmHg; (16)Vapour Pressure: 0.243 mmHg at 25°C. 

Preparation of Hexanoic acid, 3-oxo-,ethyl ester: This chemical can be prepared by pentan-2-one and carbonic acid diethyl ester. The reaction will need reagent Sodium hydride(50% in oil), and the menstruum diethyl ether. The reaction time is 5 hours with heating, and the yield is about 66%. 

Uses of Hexanoic acid, 3-oxo-,ethyl ester: It can react with benzene-1,3,5-triol to produce 5,7-dihydroxy-4-propyl-chromen-2-one. This reaction will need reagent CF₃SO₃H. The reaction time is 16 hours with temperature of 0-25°C, and the yield is about 99%.  

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: O=C(CCC)CC(=O)OCC
(2)InChI: InChI=1/C8H14O3/c1-3-5-7(9)6-8(10)11-4-2/h3-6H2,1-2H3
(3)InChIKey: KQWWVLVLVYYYDT-UHFFFAOYAO

The toxicity data is as follows: