Description

Galvin (Galvinoxyl) is a stable, persistent phenoxyl radical widely utilized as a standard in electron paramagnetic resonance (EPR) spectroscopy and as a radical scavenger in chemical research. Its significance lies in its well-defined, long-lived radical character, making it an essential tool for calibrating EPR spectrometers and studying free radical kinetics and mechanisms. This compound is primarily needed by research and development laboratories in the pharmaceutical, polymer, and material science industries, as well as academic institutions conducting advanced studies in radical chemistry and antioxidant activity.

Application

• EPR Spectroscopy Standard: Serves as a primary reference and calibration standard for g-factor measurements in Electron Paramagnetic Resonance (EPR) instruments.
• Radical Scavenging Studies: Used as a model compound to evaluate the antioxidant capacity and radical quenching efficiency of new materials or biological samples.
• Polymer Chemistry: Acts as a radical trap or inhibitor to study and control free-radical polymerization processes and assess polymer stability.
• Material Science Research: Employed in the development and testing of novel magnetic materials and organic semiconductors where radical character is a key property.
• Pharmaceutical R&D: Utilized in mechanistic studies to understand oxidative degradation pathways of active pharmaceutical ingredients (APIs) and excipients.
• Teaching and Academic Research: A fundamental reagent in university laboratories for demonstrating principles of radical chemistry and spectroscopic analysis.

Basic Information

Product Name	Galvin (Galvinoxyl)
CAS No.	22719-43-3
Molecular Formula	C₂₉H₄₁O₂
Molecular Weight	421.64 g/mol
Synonyms	Galvinoxyl; 2,6-Di-tert-butyl-α-(3,5-di-tert-butyl-4-oxo-2,5-cyclohexadien-1-ylidene)-p-tolyloxy; Peroxidyl; Galvinoxy radical; 2,6-Di-tert-butyl-α-(3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)-p-tolyloxy; Stable phenoxyl radical; EPR standard
EINECS	Contact for details

Quality Control

Our Galvin (Galvinoxyl) is produced under strict quality management protocols to ensure high purity and batch-to-batch consistency, suitable for sensitive analytical applications. Each lot undergoes comprehensive analysis, including purity assay by HPLC and identity confirmation via EPR and IR spectroscopy. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your research 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) under an inert atmosphere (e.g., nitrogen or argon) to prevent oxidation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Dark green to purple crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (EPR)	Characteristic radical signal present
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%

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