ChemSet notation

The Journal of Combinatorial Chemistry recommends the use of ChemSet notation, in which a structure number is followed by the reagent sets associated with it. The structure number is typeset in bold, and the reagent sets are set in italics and enclosed in curly brackets. 

The designation digit may usefully convey additional information beyond the simple differentiation of superatoms. For instance, Rj, R2> R3, and so on may indicate the order in which these residues were introduced to the reaction scheme. Alternatively, Rx or R0 make use of the pool designations X and O (see the section ChemSet Notation ) to concisely describe library composition in a generic structure. 

Figure 12A-1. Combinatorial reaction scheme and ChemSet notation.

A convenient descriptive notation for combinatorial libraries (recommended by the Journal of Combinatorial Chemistry) is the ChemSet terminology. 

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