4-Methoxy-2,2,6,6-tetramethylpiperidine 1-oxyl
Synonym(s):4-Methoxy-2,2,6,6-tetramethyl-1-piperidinyloxy, free radical
- CAS NO.：95407-69-5
- Empirical Formula: C10H20NO2
- Molecular Weight: 186.27
- MDL number: MFCD00270334
- EINECS: 619-125-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-09-12 18:52:48
What is 4-Methoxy-2,2,6,6-tetramethylpiperidine 1-oxyl?
The Uses of 4-Methoxy-2,2,6,6-tetramethylpiperidine 1-oxyl
4-Methoxy-TEMPO may be employed as catalyst for the synthesis of 2-substituted benzoxazoles, via aerobic oxidation reaction.
General Description
4-Methoxy-TEMPO (4-methoxy-2,2,6,6-tetramethyl-1-piperidinyloxy) is an aminoxyl free radical commonly employed for the oxidation reaction of alcohols (primary/secondary). It has been proposed as hindered amine light stabiliser (HALS) model compound. Its reaction with irradiated dilute aqueous suspensions of photocatalytic nanoparticulate titanium dioxide was investigated by electron spin resonance (ESR) and electrospray ionization mass-spectrometry (ESI-MS).
Properties of 4-Methoxy-2,2,6,6-tetramethylpiperidine 1-oxyl
| Melting point: | 40.5-44 °C (lit.) |
| storage temp. | 2-8°C |
| form | powder to crystal |
| color | Orange to Amber to Dark red |
| BRN | 4740399 |
Safety information for 4-Methoxy-2,2,6,6-tetramethylpiperidine 1-oxyl
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for 4-Methoxy-2,2,6,6-tetramethylpiperidine 1-oxyl
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