4-Phenacylidene-2,2,5,5-tetramethylimidazolidin-1-yloxy

4-苯甲酰亚甲基-2,2,5,5-四甲基咪唑烷-1-基氧自由基

Also known as: 4-Phenacylidene-2,2,5,5-tetramethylimidazolidin-1-yloxy, 2,2,5,5-Tetramethyl-4-phenacetylideneimidazolidine-1-oxyl, 4-Phenacylidene-2,2,5,5-tetramethylimidazolidin-1-yloxy free radical, 2,2,5,5-Tetramethyl-4-phenacetyliden-imidazolidine-1-oxyl, 4-Phenacylidene-2,2,5,5-tetramethylimidazolidin-1-yloxy free radical 98%

4-Phenacylidene-2,2,5,5-tetramethylimidazolidin-1-yloxy (CAS 84271-26-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C15H19N2O2 and a molecular weight of 259.32400 g/mol. It is also known as 2,2,5,5-Tetramethyl-4-phenacetylideneimidazolidine-1-oxyl, 4-Phenacylidene-2,2,5,5-tetramethylimidazolidin-1-yloxy free radical and 2,2,5,5-Tetramethyl-4-phenacetyliden-imidazolidine-1-oxyl. Key properties include a melting point of 181-183ºC(lit.), a boiling point of 393.1ºC at 760 mmHg, a density of 1.11g/cm3 and a flash point of 191.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
84271-26-1
Jingsj CID
J-27801-8
Molecular Formula
C15H19N2O2
Chinese Name
4-苯甲酰亚甲基-2,2,5,5-四甲基咪唑烷-1-基氧自由基
Molecular Weight
259.32400 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point181-183ºC(lit.)
Boiling Point393.1ºC at 760 mmHg
Density1.11g/cm3
Flash Point191.5ºC

Frequently Asked Questions

What is the CAS number of 4-Phenacylidene-2,2,5,5-tetramethylimidazolidin-1-yloxy?

The CAS number of 4-Phenacylidene-2,2,5,5-tetramethylimidazolidin-1-yloxy is 84271-26-1.

What are the molecular formula and molecular weight of 4-Phenacylidene-2,2,5,5-tetramethylimidazolidin-1-yloxy?

4-Phenacylidene-2,2,5,5-tetramethylimidazolidin-1-yloxy has molecular formula C15H19N2O2 and molecular weight 259.32400 g/mol.

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

Last updated:

How to cite: Jingsj. "4-Phenacylidene-2,2,5,5-tetramethylimidazolidin-1-yloxy (CAS 84271-26-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27801-8 (accessed 2026-10-24).

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