Trimethylsilyl derivatives of 10 different hydroxy- and methoxyhydroxy
flavonoid compounds were studied by the GC-FTIR technique. Optimal dev
iation parameters were determined for the flavonoids studied. The corr
elation found between retention and gas-phase IR data can successfully
be used in structural identification of compounds having very similar
chromatographic behaviour. The shift of the carbonyl frequency gives
information on the presence of substituting agents