Tos-PEG2-t-butyl ester

对甲苯磺酸酯丙酸叔丁酯乙二醇

Also known as: Tos-PEG2-Boc, tert-Butyl 3-(2-(tosyloxy)ethoxy)propanoate, tert-butyl 3-[2-(4-methylphenyl)sulfonyloxyethoxy]propanoate, Tos-PEG1-CH2CH2COOtBu, Tos-PEG1-t-butyl ester, Propanoic acid, 3-[2-[[(4-methylphenyl)sulfonyl]oxy]ethoxy]-, 1,1-dimethylethyl ester, 2-Methyl-2-propanyl 3-(2-{[(4-methylphenyl)sulfonyl]oxy}ethoxy)propanoate, MFCD22201525

Tos-PEG2-t-butyl ester (CAS 1309666-78-1) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C16H24O6S and a molecular weight of 344.423 g/mol. It is also known as Tos-PEG2-Boc, tert-Butyl 3-(2-(tosyloxy)ethoxy)propanoate and tert-butyl 3-[2-(4-methylphenyl)sulfonyloxyethoxy]propanoate. Key properties include a boiling point of 460.6±30.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 232.3±24.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1309666-78-1
Jingsj CID: J-1989318-9
Molecular Formula: C₁₆H₂₄O₆S
Chinese Name: 对甲苯磺酸酯丙酸叔丁酯乙二醇
Molecular Weight: 344.423 g/mol
Category: Solvents
Last updated: 8/21/2026

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point	460.6±30.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	232.3±24.6 °C

Frequently Asked Questions

What is the CAS number of Tos-PEG2-t-butyl ester?

The CAS number of Tos-PEG2-t-butyl ester is 1309666-78-1.

What are the molecular formula and molecular weight of Tos-PEG2-t-butyl ester?

Tos-PEG2-t-butyl ester has molecular formula C16H24O6S and molecular weight 344.423 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Tos-PEG2-t-butyl ester (CAS 1309666-78-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1989318-9 (accessed 2026-10-25).

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