Resolution enhancing maleimide spin label for biological EPR stu

Details Resolution enhancing maleimide spin label for biological EPR stu Resolution enhancing maleimide spin label for biological EPR stu

1981-04-03

1982-06-01

Ford, John M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D40104

Patent

active

043329462

ABSTRACT:
An improved maleimide spin label, namely, N-(.sup.15 N-oxyl-2,2,6,6-tetra-methyl-4-piperidinyl-d.sub.17) maleimide is provided for EPR spectroscopic investigations of biomedically relevant problems. Isotopic substitution of nitrogen-15 in the N--O bond and deuterium in the methyl groups (-CD.sub.3) and in all positions of the piperidine ring results in simplification of the EPR spectrum, greatly improved resolution, and a marked increase in signal intensity.

REFERENCES:
patent: 3481952 (1969-12-01), McConnell et al.
patent: 3534048 (1970-10-01), Murayama et al.
patent: 3775401 (1973-11-01), Pfirrmann
Beth et al., Chem. Phys. Letts., vol. 69, pp. 24-28 (1980).

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