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Ethyl 3,5,7,9,11,13,15-heptacyclopentylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1-undecanoate

十一酸乙酯-POSS

Also known as: PSS-(1-(ethyl undecanoate))-heptacyclopentyl, PSS-[1-(ethyl undecanoate)]-heptacyclopentyl substituted, Pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1-undecanoic acid, 3,5,7,9,11,13,15-heptacyclopentyl-, ethyl ester, Ethyl undecanoate-POSS

Ethyl 3,5,7,9,11,13,15-heptacyclopentylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1-undecanoate (CAS 308103-65-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C48H88O14Si8 and a molecular weight of 1113.89000 g/mol. It is also known as PSS-(1-(ethyl undecanoate))-heptacyclopentyl, PSS-[1-(ethyl undecanoate)]-heptacyclopentyl substituted and Pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1-undecanoic acid, 3,5,7,9,11,13,15-heptacyclopentyl-, ethyl ester. Key property: a melting point of 259-264ºC(lit.). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
308103-65-3
Jingsj CID
J-8198-6
Molecular Formula
C48H88O14Si8
Chinese Name
十一酸乙酯-POSS
Molecular Weight
1113.89000 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point259-264ºC(lit.)

Frequently Asked Questions

What is the CAS number of Ethyl 3,5,7,9,11,13,15-heptacyclopentylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1-undecanoate?

The CAS number of Ethyl 3,5,7,9,11,13,15-heptacyclopentylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1-undecanoate is 308103-65-3.

What are the molecular formula and molecular weight of Ethyl 3,5,7,9,11,13,15-heptacyclopentylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1-undecanoate?

Ethyl 3,5,7,9,11,13,15-heptacyclopentylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1-undecanoate has molecular formula C48H88O14Si8 and molecular weight 1113.89000 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Ethyl 3,5,7,9,11,13,15-heptacyclopentylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1-undecanoate (CAS 308103-65-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8198-6 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.