Sigma-Aldrich is a leading supplier to the Drug Discovery & Bioassay research community. By combining our strengths we are able to provide quality products for Assay Development and Screening like coated mutiwell plates as well as tools used in Chemistry for Discovery. Our comprehensive portfolio includes the broad range of common and specialty building blocks, crosslinked resins and reagents for solution phase and solid phase peptide synthesis. Take advantage of our Drug Discovery Program.