Description

Bis-(2,2,5,5-Tetramethyl-3-Imidazoline-1-Oxyl-4-Yl)Disulfide is a high-purity, stable nitroxide biradical compound, also known as a dinitroxide. This product is valued for its role as a versatile spin label and spin probe in advanced research applications. It is primarily utilized by scientists and R&D departments in the pharmaceutical, polymer, and materials science industries for studying molecular dynamics, structure, and interactions through techniques like Electron Paramagnetic Resonance (EPR) spectroscopy.

Application

• Spin Labeling in Biophysics: Used to tag proteins, nucleic acids, and membranes to study conformational changes, distances, and dynamics via EPR spectroscopy.
• Polymer Science & Material Characterization: Acts as a probe to investigate polymer chain mobility, cross-linking density, phase separation, and degradation processes.
• Oxidation & Stability Studies: Employed as a model compound or radical trap to study oxidative degradation mechanisms in various chemical systems.
• Nitroxide-Mediated Polymerization (NMP): Serves as a controlling agent in living radical polymerization processes to produce polymers with well-defined architectures.
• Antioxidant Research: Investigated for its radical scavenging properties in the development of novel antioxidants for industrial and biomedical uses.
• Magnetic Resonance Imaging (MRI) Contrast Agent Development: Explored in the design of next-generation, responsive contrast agents due to its paramagnetic properties.

Basic Information

Product Name	Bis-(2,2,5,5-Tetramethyl-3-Imidazoline-1-Oxyl-4-Yl)Disulfide
CAS No.	123557-49-3
Molecular Formula	C20H32N4O2S2
Molecular Weight	424.62 g/mol
Synonyms	2,2,5,5-Tetramethyl-3-imidazoline-1-oxyl-4-yl disulfide; Dinitroxide disulfide; Biradical disulfide; BTMIO disulfide; 4,4'-Dithiobis(2,2,5,5-tetramethyl-3-imidazoline-1-oxyl); Stable nitroxide biradical; TEMPO-like biradical; EPR spin label disulfide
EINECS	Contact for details

Quality Control

Our Bis-(2,2,5,5-Tetramethyl-3-Imidazoline-1-Oxyl-4-Yl)Disulfide is manufactured under controlled conditions to ensure consistent high quality suitable for sensitive research applications. Each batch undergoes rigorous analytical testing, including HPLC for purity and EPR for radical content verification. Certificates of Analysis (COA) detailing specific batch results are available upon request to support your quality assurance protocols.

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 sensitivity, this material should be stored under an inert atmosphere (e.g., nitrogen or argon) to prevent oxidation. Keep away from strong reducing agents and excessive heat.

Specification

Item	Specification
Appearance	Orange to red crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
EPR Analysis	Confirms biradical character
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.