In 1993, we founded the CHESS GmbH as a service provider conducting exclusive custom research projects (>30 man-years experience). More and more, CHESS became also a supplier of fine organic chemicals (>300 products). From the beginning our focus lies on building blocks mainly for use in medicinal chemistry. The very most of the compounds are synthesised in our laboratories in Germany.On the one hand, we are specialised in derivatives of substructures such as Piperazine, Piperidine and Pyrrolidine. On the other hand, one can also find special Alkylating Agents, Amines and Carboxylic Acid derivatives in our product listing. Some of those structures can be understood as simple but also exclusive Amino Acid derivatives. Our standard: Affordable quality: ">98%"Short delivery times, usually "ex stock" Uncomplicated business relation: "chemists for chemists"