Description

4-Carbamoyl-2,2,5,5-Tetramethyl-3-Imidazoline-3-Oxide-1-Oxyl is a stable nitroxide radical, widely recognized as a versatile spin label and probe in advanced research. Its primary value lies in its paramagnetic properties, which are essential for techniques like Electron Paramagnetic Resonance (EPR) spectroscopy and spin labeling in biophysical studies. This compound is a critical reagent for researchers and industries focused on structural biology, polymer science, and the development of advanced materials, where understanding molecular dynamics and interactions is paramount.

Application

• Spin Labeling in Biophysics: Used to tag proteins, nucleic acids, and membranes for studying structure, dynamics, and conformational changes via EPR spectroscopy.
• Polymer & Material Science: Acts as a radical probe to investigate polymerization kinetics, polymer chain mobility, and the properties of advanced materials like gels and composites.
• Antioxidant Research: Serves as a model compound in studies of redox processes and the scavenging of free radicals due to its stable radical nature.
• Magnetic Resonance Imaging (MRI) Contrast Agents: Investigated as a component in the development of novel, responsive contrast agents for medical imaging.
• Catalysis & Organic Synthesis: Employed as a catalyst or mediator in controlled radical polymerization processes and selective oxidation reactions.
• Quality Control in Pharmaceutical Development: Utilized as a standard or reference material in analytical method development for radical-containing compounds.

Basic Information

Product Name	4-Carbamoyl-2,2,5,5-Tetramethyl-3-Imidazoline-3-Oxide-1-Oxyl
CAS No.	69826-43-3
Molecular Formula	C9H16N3O3
Molecular Weight	214.24 g/mol
Synonyms	CTMIO; 4-Carbamoyl-2,2,5,5-tetramethyl-3-imidazoline-1-oxyl-3-oxide; 3-Carbamoyl-2,2,5,5-tetramethylpyrrolidin-1-oxyl (common misnomer); 4-Carbamoyl-PROXYL; 4-Carbamoyl-2,2,5,5-tetramethyl-3-imidazoline-1-oxyl; 4-Carbamoyl-2,2,5,5-tetramethylimidazolidin-3-oxyl-1-oxide; Nitroxide spin label CTMIO; Stable free radical 69826-43-3
EINECS	Contact for details

Quality Control

Our 4-Carbamoyl-2,2,5,5-Tetramethyl-3-Imidazoline-3-Oxide-1-Oxyl is produced under strict quality management protocols to ensure high purity and batch-to-batch consistency, suitable for sensitive research applications. Each lot is characterized using advanced analytical techniques including HPLC, NMR, and EPR spectroscopy to confirm identity, purity, and radical content. Certificates of Analysis (COA) with detailed specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C under an inert atmosphere (e.g., nitrogen or argon) to minimize oxidation. Keep away from strong oxidizing agents and reducing agents. For long-term storage, consider storing at 2-8°C.

Specification

Item	Specification
Appearance	Orange to red crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Radical Content (EPR)	≥ 97.0%
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.