Electron Spin Resonance (ESR/EPR) Spectroscopy — includes stable radicals and spin-trap compounds such as nitroxide, nitrone, and nitrosobenzene derivatives used to generate or capture free radical species. This group is a key component in electron spin resonance spectroscopy techniques for detecting unpaired electrons.
Electron Spin Resonance (ESR/EPR) Spectroscopy reagents are used by researchers in radical chemistry, biochemistry, and materials science to trap short-lived reactive radicals through spin-trapping reactions so they can be analyzed with an EPR spectrometer. Compounds such as TEMPO and nitrone derivatives also function as signal calibration standards and as catalysts in selective oxidation reactions.
Example products in this collection: TCI T1560 2564-83-2 2,2,6,6-Tetramethylpiperidine 1-Oxyl Free Radical, TCI C1406 2154-68-9 3-Carboxy-2,2,5,5-tetramethylpyrrolidine 1-Oxyl Free Radical, TCI T1554 10135-38-3 3,3,5,5-Tetramethyl-1-pyrroline N-Oxide, TCI C1428 37149-18-1 4-Carboxy-2,2,6,6-tetramethylpiperidine 1-Oxyl Free Radical, TCI T1534 24973-59-9 2,4,6-Tri-tert-butylnitrosobenzene, TCI C1432 36775-23-2 4-(2-Chloroacetamido)-2,2,6,6-tetramethylpiperidine 1-Oxyl Free Radical, TCI B1735 66893-81-0 N-tert-Butyl-alpha-(4-pyridyl-1-oxide)nitrone, TCI C1782 38078-71-6 4-Cyano-2,2,6,6-tetramethylpiperidine 1-Oxyl Free Radical.
Pay attention to the stability of radicals toward light and storage temperature, purity, which affects signal intensity, and the suitability of the spin-trap type for the target radical to be detected. All products are genuine Tokyo Chemical Industry (TCI) Japan products, with purity, packaging, and storage conditions listed on each item's page.
Other parallel categories under Spectroscopy Reagents, often used together in one laboratory workflow:
Back to Spectroscopy Reagents. For large-volume procurement, special packaging, or specific grades, contact the AMI Scientific team — the official TCI Japan distributor in Indonesia — to check availability and lead time directly from Japan.
