The Propanedioic acid,2-methoxy-, 1,3-dimethyl ester, with the CAS registry number 5018-30-4 and EINECS registry number 225-697-0, has the systematic name of dimethyl methoxypropanedioate. It is a kind of clear colourless liquid after melting, and should be stored at 0-6°C. And the molecular formula of the chemical is C₆H₁₀O₅.

The characteristics of Propanedioic acid,2-methoxy-, 1,3-dimethyl ester are as followings: (1)ACD/LogP: 0.50; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.5; (4)ACD/LogD (pH 7.4): 0.5; (5)ACD/BCF (pH 5.5): 1.41; (6)ACD/BCF (pH 7.4): 1.41; (7)ACD/KOC (pH 5.5): 44.45; (8)ACD/KOC (pH 7.4): 44.45; (9)#H bond acceptors: 5; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 5; (12)Polar Surface Area: 61.83 Å²; (13)Index of Refraction: 1.411; (14)Molar Refractivity: 35.09 cm³; (15)Molar Volume: 141.2 cm³; (16)Polarizability: 13.91×10^-24cm³; (17)Surface Tension: 32.5 dyne/cm; (18)Density: 1.147 g/cm³; (19)Flash Point: 107.8 °C; (20)Enthalpy of Vaporization: 45.22 kJ/mol; (21)Boiling Point: 215.8 °C at 760 mmHg; (22)Vapour Pressure: 0.145 mmHg at 25°C. 

Uses of Propanedioic acid,2-methoxy-, 1,3-dimethyl ester: It can react with benzeneselenenyl chloride to produce 2-methoxy-2-phenylselanyl-malonic acid dimethyl ester. This reaction will need reagent NEt₃, and the menstruum tetrahydrofuran. The reaction time is 2 hours with temperature of 0-20°C, and the yield is about 82%.   

You should be cautious while dealing with this chemical. It irritates to eyes, respiratory system and skin. Therefore, you had better take the following instructions: Avoid contact with skin and eyes; Wear suitable protective clothing, and if in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice. 

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: O=C(OC)C(OC)C(=O)OC
(2)InChI: InChI=1/C6H10O5/c1-9-4(5(7)10-2)6(8)11-3/h4H,1-3H3
(3)InChIKey: ORXJMBXYSGGCHG-UHFFFAOYAR