Term: substrate
https://doi.org/10.1351/goldbook.S06082

Definition:
A chemical species, the reaction of which with some other chemical reagent is under observation (e.g. a compound that is transformed under the influence of a catalyst). The term should be used with care. Either the context or a specific statement should always make it clear which chemical species in a reaction is regarded as the substrate.

Related Terms:
1) transformation (http://doi.org/10.1351/goldbook.T06446).
2) chemical species (http://doi.org/10.1351/goldbook.CT01038).
3) catalyst (http://doi.org/10.1351/goldbook.C00876).
4) reagent (http://doi.org/10.1351/goldbook.R05190).

Source: PAC, 1993, 65, 2291. 'Nomenclature of kinetic methods of analysis (IUPAC Recommendations 1993)' on page 2298 (https://doi.org/10.1351/pac199365102291)

Citation: 'substrate' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.S06082

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