1852, in chemistry, back-formation from isomeric. A compound identical or nearly so in composition and molecular weight with another, but having different properties. *(s)mer- (2) Proto-Indo-European root meaning "to get a share of something." It forms all or part of: demerit; emeritus...
metal ion complexes in solution to intramolecular equilibria between an ‘open’ and a ‘closed’ form; ‘closed’ form meaning that a metal ion is bound to a strongly ligating group, which largely determines the overall stability of the complex, and in addition to a weakly coordinating site....
Since kukoamine B possesses higher potentials than kukoamine A in these pathways, kukoamine B is thus superior to kukoamine A in terms of cytoprotection. These differences can ultimately be attributed to positional isomeric effects. Keywords: positional isomeric effect; antioxidant mechanisms; ...