4-Acetamido-2,2,6,6-tetramethylpiperidine 1-oxyl

Also known as: 4-Acetamido-TEMPO, 4-Acetamido-TEMPO, free radical, 4-(Acetylamino)-2,2,6,6-tetramethyl-1-piperidinyloxy, 4-Acetylamino-2,2,6,6-tetramethylpiperidin-1-oxyl, 1-Piperidinyloxy, 4-(acetylamino)-2,2,6,6-tetramethyl-, 4-Acetamido-2,2,6,6-tetramethylpiperidine 1-oxyl free radical, 4-Acetamido-2,2,6,6-tetramethylpiperidinooxy, 4-Acetamido-2,2,6,6-tetramethylpiperidinyloxy, 4-Acetylamino-2,2,6,6-tetramethyl-1-piperidinyloxy, (4-Acetamido-2,2,6,6-tetramethyl-1-piperidinyl)oxidanyl, (4-Acetamido-2,2,6,6-tetramethylpiperidin-1-yl)oxidanyl, 2,2,6,6-Tetramethyl-4-acethylamino-piperidin-1-oxyl, MFCD00043593

4-Acetamido-2,2,6,6-tetramethylpiperidine 1-oxyl (CAS 14691-89-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H21N2O2 and a molecular weight of 213.297 g/mol. Key properties include a melting point of 143-145 °C(lit.), a boiling point of 368.8ºC at 760 mmHg and a flash point of 176.8ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

14691-89-5

Jingsj CID

J-40721-6

Molecular Formula

C₁₁H₂₁N₂O₂

Molecular Weight

213.297 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026