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Pure Appl. Chem., Vol. 71, No. 12, pp. 2349-2365, 1999

Glossary of Terms Used in Combinatorial Chemistry

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Unbiased Library: Library prepared from building blocks and scaffold chosen without bias towards a particular target33.

Universal Library: A hypothetical compound collection which will show activity in all assays; A library with useful activity in many assays.

Virtual Library: A library which has no physical existence, being constructed solely in electronic form or on paper. The building blocks required for such a library may not exist, and the chemical steps for such a library may not have been tested. These libraries are used in the design and evaluation of possible libraries48.

Virtual Screening: Selection of compounds by evaluating their desirability in a computational model. Also termed in silico screening17,111.

Wang Resin: Acid-cleavable resin which generates compounds bearing a carboxylic acid. (4-hydroxymethyl)phenoxymethyl polystyrene112.

X-Ray Photoelectron Spectroscopy (XPS): Technique for determining the elemental composition at a solid surface by measuring the energy of elctrons emitted in response to X-rays of different frequency. Has been applied to solid-phase combinatorial chemistry by incorporating a tracer atom in the linker113.


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