3-Cyano-2,2,5,5-tetramethyl-1-pyrrolidinyloxy

3-氰基-2,2,5,5-四甲基-1-吡咯烷基氧化物

Also known as: 3-Cyano-PROXYL, 3-cyano-2,2,5,5-tetramethyl-1-pyrrolidinyloxy, free radical, 3-cyano-2,2,5,5-tetramethyl-1-pyrrolidinyl-N-oxyl, 1-pyrrolidinyloxy, 3-cyano-2,2,5,5-tetramethyl-, 3-cyano-2,2,5,5-tetramethylpyrrolidine-1-oxyl, 2,2,5,5-Tetramethyl-3-cyano-pyrrolidin-1-oxyl, 3-Cyan-2,2,5,5-tetramethyl-pyrrolidin-1-yloxy, MFCD00010548

3-Cyano-2,2,5,5-tetramethyl-1-pyrrolidinyloxy (CAS 2154-70-3) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H15N2O and a molecular weight of 167.22800 g/mol. It is also known as 3-Cyano-PROXYL, 3-cyano-2,2,5,5-tetramethyl-1-pyrrolidinyloxy, free radical and 3-cyano-2,2,5,5-tetramethyl-1-pyrrolidinyl-N-oxyl. Key properties include a melting point of 31-33ºC(lit.) and a flash point of 113 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2154-70-3
Jingsj CID
J-47717-6
Molecular Formula
C9H15N2O
Chinese Name
3-氰基-2,2,5,5-四甲基-1-吡咯烷基氧化物
Molecular Weight
167.22800 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point31-33ºC(lit.)
Flash Point113 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 3-Cyano-2,2,5,5-tetramethyl-1-pyrrolidinyloxy?

The CAS number of 3-Cyano-2,2,5,5-tetramethyl-1-pyrrolidinyloxy is 2154-70-3.

What are the molecular formula and molecular weight of 3-Cyano-2,2,5,5-tetramethyl-1-pyrrolidinyloxy?

3-Cyano-2,2,5,5-tetramethyl-1-pyrrolidinyloxy has molecular formula C9H15N2O and molecular weight 167.22800 g/mol.

Is 3-Cyano-2,2,5,5-tetramethyl-1-pyrrolidinyloxy hazardous?

3-Cyano-2,2,5,5-tetramethyl-1-pyrrolidinyloxy has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "3-Cyano-2,2,5,5-tetramethyl-1-pyrrolidinyloxy (CAS 2154-70-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47717-6 (accessed 2026-10-23).

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