The 2-Propenoic acid,2-methyl-, 3-(1,1,3,3,3-pentamethyl-1-disiloxanyl)propyl ester, with the CAS registry number 18151-85-4, is also known as 3-Methacryloxypropylpentamethyldisiloxane. Its EINECS number is 242-037-7. It belongs to the product category of Monomer. This chemical's molecular formula is C₁₂H₂₆O₃Si₂ and molecular weight is 274.5. What's more, its systematic name is 3-(Pentamethyldisiloxanyl)propyl 2-methylprop-2-enoate. The product should be stored at temperature below 5 °C.

Physical properties of 2-Propenoic acid,2-methyl-, 3-(1,1,3,3,3-pentamethyl-1-disiloxanyl)propyl ester are: (1)ACD/LogP: 5.86; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 5.86; (4)ACD/LogD (pH 7.4): 5.86; (5)ACD/BCF (pH 5.5): 16686.36; (6)ACD/BCF (pH 7.4): 16686.36; (7)ACD/KOC (pH 5.5): 36639.82; (8)ACD/KOC (pH 7.4): 36639.82; (9)#H bond acceptors: 3; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 8; (12)Polar Surface Area: 35.53 Å²; (13)Index of Refraction: 1.429; (14)Molar Refractivity: 78.16 cm³; (15)Molar Volume: 302.8 cm³; (16)Polarizability: 30.98×10^-24 cm³; (17)Surface Tension: 22.2 dyne/cm; (18)Density: 0.906 g/cm³; (19)Flash Point: 95.6 °C; (20)Enthalpy of Vaporization: 50.45 kJ/mol; (21)Boiling Point: 266.6 °C at 760 mmHg; (22)Vapour Pressure: 0.00858 mmHg at 25°C.

Preparation: this chemical can be prepared by pentamethyl-disiloxane and methacrylic acid allyl ester at the temperature of 90-95 °C. This reaction will need reagents 0.05 N H₂PtCl₆•6H₂O, phenothiazine and solvent tetrahydrofuran with the reaction time of 1.5 hours.

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C(OCCC[Si](O[Si](C)(C)C)(C)C)\C(=C)
(2)InChI: InChI=1S/C12H26O3Si2/c1-11(2)12(13)14-9-8-10-17(6,7)15-16(3,4)5/h1,8-10H2,2-7H3
(3)InChIKey: NWBTXZPDTSKZJU-UHFFFAOYSA-N