Description

4-Phenyl-2,2,5,5-tetramethyl-3-imidazolin-1-yloxy is a stable nitroxide radical belonging to the imidazoline class, widely recognized for its utility as a spin label and spin trap in electron paramagnetic resonance (EPR) spectroscopy. This compound matters for researchers and industrial chemists because it provides a robust, persistent radical center essential for probing molecular dynamics, studying polymer systems, and investigating free radical processes. It is primarily needed by the pharmaceutical research, polymer science, and advanced materials development sectors for applications requiring precise molecular-level analysis.

Application

• Spin Labeling in Biophysics & Biochemistry: Used to tag proteins, nucleic acids, and membranes to study structure, dynamics, and conformational changes via EPR spectroscopy.
• Polymer Chemistry & Material Science: Acts as a radical probe for investigating polymerization kinetics, polymer chain mobility, and the microstructure of synthetic rubbers and plastics.
• Spin Trapping Agent: Employed to detect and identify short-lived free radicals in chemical, biological, and environmental systems.
• Oxidation/Reduction Studies: Serves as a stable radical standard or redox mediator in mechanistic studies of electron transfer reactions.
• Advanced Material Development: Utilized in the synthesis and characterization of organic magnetic materials and molecular electronics.
• Pharmaceutical Research: Applied in drug discovery to study drug-membrane interactions and the role of radicals in disease pathways.

Basic Information

Product Name	4-Phenyl-2,2,5,5-tetramethyl-3-imidazolin-1-yloxy
CAS No.	39753-69-0
Molecular Formula	C13H17N2O
Molecular Weight	217.29 g/mol
Synonyms	4-Phenyl-2,2,5,5-tetramethyl-3-imidazoline-1-oxyl; 4-Phenyl-2,2,5,5-tetramethyl-δ3-imidazoline-1-oxyl; 4-Phenyl-2,2,5,5-tetramethylimidazolidin-1-oxyl; 4-Phenyl-2,2,5,5-tetramethyl-3-imidazolin-1-oxyl radical; PTMIO; 1-Oxyl-4-phenyl-2,2,5,5-tetramethyl-3-imidazoline; 39753-69-0; 4-Phenyl-2,2,5,5-tetramethyl-δ3-imidazolin-1-oxyl
EINECS	Contact for details

Quality Control

Our 4-Phenyl-2,2,5,5-tetramethyl-3-imidazolin-1-yloxy is produced under strict quality management protocols to ensure high purity and batch-to-batch consistency, suitable for sensitive research applications. All products undergo rigorous analytical testing, including HPLC, EPR spectroscopy, and elemental analysis, to verify identity, purity, and radical content. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This compound is easily oxidized; for long-term storage, it is recommended to keep the material under an inert atmosphere (argon or nitrogen) in a sealed container. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Orange to red crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (EPR)	Characteristic triplet signal
Assay (HPLC)	≥ 98.0%
Radical Content (EPR)	≥ 97.0%
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.