Description

2-Methyl-2-Nonyl-4-Phenyl-2H-Imidazole-1-Oxide, Free Radical, 99+% is a high-purity, stable nitroxide radical compound, identified by CAS No. 136440-26-1. This product is valued for its role as a versatile intermediate and a stable radical source in advanced chemical synthesis and materials science. It is essential for researchers and manufacturers in the pharmaceutical, polymer, and specialty chemical industries who require reliable, high-quality radical precursors for polymerization control, spin-labeling, and catalysis.

Application

• Polymer Chemistry: Acts as a stable nitroxide mediator in Nitroxide-Mediated Radical Polymerization (NMP) for controlled synthesis of block copolymers and advanced polymeric materials.
• Pharmaceutical Research: Serves as a key building block or spin probe in the development of novel active pharmaceutical ingredients (APIs) and in mechanistic studies.
• Materials Science: Utilized in the synthesis of organic electronic materials, liquid crystals, and as a dopant or stabilizer in functional coatings.
• Analytical Chemistry: Employed as a spin label or standard in Electron Paramagnetic Resonance (EPR) spectroscopy for studying molecular dynamics and structure.
• Antioxidant Research: Investigated for its potential radical-scavenging properties in stabilization formulations for plastics, fuels, and lubricants.
• Cross-Coupling Reactions: Functions as a catalyst or co-catalyst in various metal-free or transition metal-catalyzed organic transformations.

Basic Information

Product Name	2-Methyl-2-Nonyl-4-Phenyl-2H-Imidazole-1-Oxide, Free Radical
CAS No.	136440-26-1
Molecular Formula	C19H28N2O
Molecular Weight	300.44 g/mol
Synonyms	2-Methyl-2-nonyl-4-phenyl-2H-imidazole 1-oxide; 2H-Imidazole 1-oxide, 2-methyl-2-nonyl-4-phenyl-; 2-Methyl-2-nonyl-4-phenylimidazole 1-oxide; Nitroxide radical 136440-26-1; Stable imidazoline nitroxide; N-tert-Octyl-α-phenylnitrone derivative (structural analog); TEMPO analog (long-chain substituted)
EINECS	Contact for details

Quality Control

Every batch of 2-Methyl-2-Nonyl-4-Phenyl-2H-Imidazole-1-Oxide is produced and tested under strict quality management protocols to ensure a consistent purity of 99+%. Our quality assurance includes comprehensive analytical testing via HPLC, NMR, and EPR spectroscopy. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming identity, purity, and conformance to agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its nature as a compound that is easily oxidized, long-term storage under an inert atmosphere (argon or nitrogen) is recommended to maintain optimal stability and shelf life. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder or solid
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 99.0%
EPR Analysis	Confirms free radical character
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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