Each of two or more isomers of a compound that exist together in equilibrium, and are readily interchanged by migration of an atom or group within the molecule.
- ‘These structures are called tautomers, which exist in dynamic equilibrium with each other.’
- ‘Earlier studies also support the fact that phenolic compounds could convert to different tautomers, quinone, ketone and dimers at higher pH in the presence of oxidative species.’
- ‘In our previous study on vibrational relaxation in HRP the relaxation time varied in the range of 1-10 ps for different vibrational modes of pyrrole tautomers of the chromophore.’
- ‘Because the interconversion of the two tautomers is slower than the actual proton transfer reaction, a conformational change is probably associated with the isomerization.’
- ‘Most often, the ketone is the much more stable of the two tautomers.’
Early 20th century: blend of tauto- same and isomer.