Abstract
AbstractA method for the synthesis and quality control of compound collections containing reactive thiol functions was developed. Such libraries form the basis for the construction of chemical microarrays to be used in fragment‐based screening. Amino‐modified polymer membranes fixed into the wells of microtiter plates were used as the solid phase for the nanomole‐scale synthesis of a thiol‐tagged small molecule library using a spatial one‐compound/one‐well strategy. A thiolselective Liquid Chromatography‐Mass Spectroscopy (LC‐MS) protocol of each compound before attachment to the microarray surface was established, allowing an exact determination of compound purity and concentration. The established synthesis and quality control method is an important prerequisite for an accurate read‐out of the array compound–target interaction data, and simplifies the usage of small molecule microarrays for low affinity screening.
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