Patent ID: 8143420

Claim:
A spin trapping compound for analyzing free radicals having: a nitrone of a structure of: wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 and R 7 are independently selected from the group consisting of deuterium, hydrogen, a hydrocarbon, a halogenalkane, an oxygen-containing group, a nitrogen-containing group and a phosphorus- and sulfur-containing group, wherein at least one of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 and R 7 contains nitrogen, phosphorus, or oxygen; a linker attached at R 1 , R 2 , R 3 , R 4 , R 5 , R 6 or R 7 ; and a detecting moiety separate from R 1 , R 2 , R 3 , R 4 , R 5 , R 6 or R 7 that is attached to the linker, wherein the detecting moiety is selected from the group consisting of biotin, a positron emission tomography (PET) radiotracer, a single photon emission computed tomography (SPECT) radiotracer, a radiotracer contrast agent, a chromogenic molecule, a fluorescent molecule, and a radioactive molecule.