CAS 36763-53-8 appears in our catalog under these names: 4-Oxo-2,2,6,6-tetramethylpiperidine-d16-1-oxyl, 98 atom % D, 4-OXO-TEMPO-D16, FREE RADICAL FOR ESR S&, Tempone-d16. Offered by: CDN, Sigma-Aldrich, MedChemExpress. Available pack sizes: 0,25g, 0,1g, 500MG, 1 mg.