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1,11-dibromo-3,6,9-trioxaundecane

Also known as: 1-bromo-2-(2-(2-(2-bromoethoxy)ethoxy)ethoxy)ethane, Br-PEG3-Br, Bromo-PEG3-bromide, 3,6,9-trioxa-1,11-dibromoundecane, 1,11-dibromo-3,6,9-trioxaundecane, Br-PEG3-CH2CH2Br

1,11-dibromo-3,6,9-trioxaundecane (CAS 31255-26-2) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H16Br2O3 and a molecular weight of 320.01900 g/mol. Key properties include a boiling point of 146 °C at 0.06 Torr (lit.) and a density of 1.57 g/cm3at 25°C (lit.). No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
31255-26-2
Jingsj CID
J-1979428-6
Molecular Formula
C8H16Br2O3
Molecular Weight
320.01900 g/mol
Category
Aliphatic Hydrocarbons
Last updated
11/3/2026
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Physicochemical Properties

Boiling Point146 °C at 0.06 Torr (lit.)
Density1.57 g/cm3at 25°C (lit.)
Exact Mass317.94700
PSA27.69000
LogP1.82600

Activity & Biological Data

TargetPEGs
Additional Information[1]. An S, et al. Small-molecule PROTACs: An emerging and promising approach for the development of targeted therapy drugs. EBioMedicine. 2018 Oct;36:553-562

Frequently Asked Questions

What is the CAS number of 1,11-dibromo-3,6,9-trioxaundecane?

The CAS number of 1,11-dibromo-3,6,9-trioxaundecane is 31255-26-2.

What are the molecular formula and molecular weight of 1,11-dibromo-3,6,9-trioxaundecane?

1,11-dibromo-3,6,9-trioxaundecane has molecular formula C8H16Br2O3 and molecular weight 320.01900 g/mol.

What are the upstream and downstream products of 1,11-dibromo-3,6,9-trioxaundecane?

For 1,11-dibromo-3,6,9-trioxaundecane, Upstream Products: Tetraethylene glycol, Triphenylphosphine, Tetraethylene glycol di-p-tosylate; Downstream Products: 1,11-Diamino-3,6,9-trioxaundecane, 4-tert-butyl-calix[4]arene-crown-5-complex, Bis(1,4-phenylene)-34-crown 10-ether.

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

Last updated:

How to cite: Jingsj. "1,11-dibromo-3,6,9-trioxaundecane (CAS 31255-26-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1979428-6 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.