The spectral data obtained with FT-IR normally provide information only about the degree of conversion of the reactants in the final product but there is no knowledge about how many compounds are involved or how they evolve over time.
The flavonoid biosynthesis pathway is central to the formation of the phenolic compounds involved in many plant traits, including resistance to abiotic and biotic stresses [ 1- 4].
Genes in these networks connect to all other genes associated with a particular metabolite, such that so-called currency metabolites (compounds involved in many reactions, for instance water, carbon dioxide and ATP) can link large swathes of metabolism to create large (complete) subnetworks.
Because of tautomerism, the carbon atom adjacent to the carbonyl group is also susceptible to attack if that carbon atom possesses a hydrogen atom (an α-hydrogen); many reactions of such carbonyl compounds involve replacement of the α-hydrogen.
What I enjoy most about clinical research at CHDR is early clinical drug development (traditionally described as phase I and II; see box) involving many compounds with new or more targeted mechanisms of action.
Because of the multiplicity of colorants (even within dyes of one color), the method used for their examination involves differentiation between many compounds, which prolongs the analysis even up to about an hour [ 4, 7, 9, 12, 14, 15].
Some enzymes are common to a number of pathways involving key precursors to many compounds.
The discovery of biologically active molecules typically involves the synthesis and testing of many compounds, each individually crafted to optimize the arrangement of functionality.
But it has also been one of recognition that this simply compounds the many risks involved in giving scientific advice, particularly on health and environmental hazards.
"How many compounds are they using?
