Linked Life Data

8661290

Source:http://linkedlifedata.com/resource/pubmed/id/8661290

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1996-8-16
pubmed:abstractText
The use of 5,5-dimethylpyrroline-N-oxide (DMPO) as a versatile spin trap was first published in this journal (E.G. Janzen and J.I.-P. Liu, J. Magn. Reson. 9, 510-512 (1973). In this paper, the general use of an improved DMPO-type spin trap, namely 5-methyl-5-phenylpyrroline-N-oxide (MPPO), is proposed. MPPO is more stable than DMPO and has an excellent shelf life. Commonly known artifacts of DMPO are not present in MPPO. The EPR spectra of MPPO spin adducts have the same patterns as DMPO spin adducts which users have become familiar with. The lifetimes of spin adducts are longer for MPPO than for DMPO and the rate constants of spin trapping are similar. An interesting additional feature is associated with the detection of two spin-adduct spectra in some cases. The major component is assigned to the trans addition product (with respect to the phenyl group) in the case of carbon-centered radicals. The minor component is assigned to the cis adduct. In the superoxide/peroxyl radical adduct, however, the reverse appears to be the case. Only one EPR spectrum is detected in the hydroxyl radical adduct of MPPO.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1064-1866
pubmed:author
pubmed:issnType
Print
pubmed:volume
111
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
254-61
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Chiral spin traps. The spin trapping chemistry of 5-methyl-5-phenylpyrroline-N-oxide (MPPO).
pubmed:affiliation
National Biomedical Center for Spin Trapping and Free Radicals, Program, Oklahoma Medical Research Foundation, Oklahoma City 73104, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.