Free Radicals
Specialty stable radicals — primarily TEMPO (2,2,6,6-Tetramethylpiperidin-1-oxyl) and its key derivatives — designed for controlled oxidation, polymerisation moderation, and mechanistic research. With over five decades of chemical R&D expertise, VUP offers pilot-plant and laboratory-scale radicals for precise control in organic synthesis, living polymerisation (NMP), and redox catalysis.
Our Free Radicals Portfolio
Discover our range of high-quality Free Radicals products for your specific application needs.
TEMPO (2,2,6,6-Tetramethylpiperidin-1-oxyl)
A highly versatile and stable nitroxyl radical, renowned for its utility as a catalyst in selective organic oxidations and as a mediator in controlled radical polymerization (NMP). VUP produces high-purity TEMPO at pilot scale.
Key Properties
4-Hydroxy-TEMPO (TEMPOL / H-TEMPO)
A key functionalized derivative of TEMPO featuring both a stable nitroxyl radical and reactive hydroxyl group. Serves as a versatile antioxidant, catalyst, spin label, and crucial intermediate for synthesizing specialty chemicals.
Key Properties
4-Oxo-TEMPO (TEMPone)
A ketone-functionalized stable nitroxyl radical based on TEMPO, offering alternative reactivity in selective oxidation catalysis and serving as a versatile intermediate for synthesizing complex nitroxide derivatives.
Key Properties
4-Acetamido-TEMPO
A functionalized derivative of the stable nitroxyl radical TEMPO featuring an acetamido group. Primarily used as a spin label probe for Electron Paramagnetic Resonance (EPR) spectroscopy in biochemical and materials science research.
Key Properties
4-Amino-TEMPO
Amino-functionalized TEMPO radical featuring stable nitroxyl functionality combined with reactive amino group. Ideal for spin labeling, bioconjugation, and advanced materials research. VUP Lab Researched quality.
Key Properties
Galvinoxyl Free Radical
A highly stable phenoxyl radical structurally distinct from TEMPO derivatives. Used as analytical standard for radical scavenging studies and antioxidant research. Deep blue color provides visual indication of radical concentration.
Key Properties
Industry Applications for Free Radicals
Our Free Radicals serve diverse applications across industry sectors.
Catalytic Oxidation
Selective alcohol-to-aldehyde and amine-to-imine transformations under mild conditions for fine chemical and pharmaceutical synthesis.
Controlled Radical Polymerisation (NMP)
Nitroxide-mediated polymerisation for precise molecular weight control and synthesis of well-defined polymer architectures.
Redox Catalysis
Employed in electrochemical and chemical redox cycles for organic synthesis and catalytic transformations.
Spin Labeling & EPR Research
Stable radicals for mechanistic and structural analysis in ESR/EPR spectroscopy and biophysical studies.
Antioxidant & Stability Studies
Used in oxidative stability modelling of polymers and organic materials for research and development applications.
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