Description

Nitroxide, Methyl 2,4,6-Trimethylphenyl (9Ci) is a stable nitroxide radical, a member of the TEMPO (2,2,6,6-Tetramethylpiperidin-1-oxyl) family, characterized by its sterically hindered aromatic structure. This compound matters as a highly effective and versatile mediator for controlled radical polymerization (CRP) and a robust spin label for electron paramagnetic resonance (EPR) spectroscopy. Chemical manufacturers and R&D laboratories need it for synthesizing advanced polymers with precise molecular weight control and for probing molecular dynamics and structural biology.

Application

• Mediator/Control Agent for Nitroxide-Mediated Polymerization (NMP) and other controlled radical polymerization techniques.
• Spin Label/Spin Probe for Electron Paramagnetic Resonance (EPR) spectroscopy in biophysical and materials research.
• Intermediate in the synthesis of specialized organic catalysts and ligands.
• Stable radical source for studying antioxidant mechanisms and radical scavenging activity.
• Building block for functional materials, including molecular magnets and redox-active polymers.
• Use in polymer stabilization as a hindered amine light stabilizer (HALS) precursor.

Basic Information

Product Name	Nitroxide, Methyl 2,4,6-Trimethylphenyl (9Ci)
CAS No.	70530-75-5
Molecular Formula	C10H13NO
Molecular Weight	163.22 g/mol
Synonyms	2,4,6-Trimethylphenyl tert-butyl nitroxide; (2,4,6-Trimethylphenyl)(tert-butyl)aminoxyl; 1-((2,4,6-Trimethylphenyl)oxy)-2-methylpropan-2-aminoxyl; tert-Butyl 2,4,6-trimethylphenyl nitroxide; Methyl 2,4,6-trimethylphenyl nitroxide; Aromatic TEMPO derivative; Sterically hindered nitroxyl radical.
EINECS	Contact for details

Quality Control

Our Nitroxide, Methyl 2,4,6-Trimethylphenyl (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and EPR for radical content verification, to ensure consistency and compliance with research and industrial standards. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and assay is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is light-sensitive (store away from light). For long-term storage under an inert atmosphere (e.g., nitrogen or argon) is recommended to maintain radical stability.

Specification

Item	Specification
Appearance	Orange to red crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Radical Content (EPR)	≥ 95.0%
Melting Point	Contact for details
Residue on Ignition	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.