Description

Semiquinone Radicals are highly reactive, paramagnetic intermediates crucial in numerous electron transfer processes. Their unique redox properties make them indispensable for studying and catalyzing complex chemical reactions. This compound is primarily sought by researchers and manufacturers in the fields of advanced materials science, organic electronics, and as mechanistic probes in biochemistry and photochemistry.

Application

• As a key intermediate and mechanistic probe in the study of biological electron transport chains and enzymatic reactions.
• In the research and development of organic semiconductors and conductive polymers for electronic devices.
• As a building block or dopant for designing advanced functional materials with specific magnetic or optical properties.
• Utilized in photoredox catalysis to drive novel synthetic pathways under light irradiation.
• As a standard or reference material in ESR (Electron Spin Resonance) spectroscopy for quantifying radical species.
• In the formulation of specialized redox mediators for applications in energy storage systems like batteries or fuel cells.

Basic Information

Product Name	Semiquinone Radicals
CAS No.	3225-29-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	1,4-Benzoquinone Radical Anion; p-Benzoquinone Radical Anion; p-Benzosemiquinone; Semiquinone Anion Radical; Quinone Radical Anion; 2,5-Cyclohexadiene-1,4-dione radical anion; 1,4-Cyclohexadienedione radical anion
EINECS	Contact for details

Quality Control

Our Semiquinone Radicals are produced and handled under controlled conditions to ensure batch-to-batch consistency and high reactivity. Each lot undergoes rigorous analytical testing, including purity assessment by ESR and spectroscopic methods. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and handling specifications is provided with every shipment to support your research and quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Due to its sensitivity, this material must be stored under an inert atmosphere (e.g., argon or nitrogen) in a cool, dry place. Recommended storage temperature is 2-8°C for long-term stability. Handle and open containers only in a controlled, oxygen-free environment to prevent decomposition.

Specification

Item	Specification
Appearance	Dark colored solid or solution
Identification (ESR)	Complies
Purity (ESR/UV-Vis)	≥ 95% (or as specified)
Solvent (if supplied as solution)	Specified inert solvent (e.g., DMSO, THF under Ar)
Inert Atmosphere	Sealed under Argon/Nitrogen

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