Abstract: The invention is directed to a system and a method for processing chemical substances, a computer program for controlling such system, and a corresponding computer-readable storage medium, which can be used, in particular, to flexibly adapt synthesis devices, in particular for radioactive chemicals or radioactive pharmaceutical products, to different process flows and to make the synthesis devices usable for research and routine operation. To this end, a system for processing chemical substances in a laboratory setting is proposed, wherein the system includes components for carrying out basic chemical processing operations. The components can be modularly combined according to presettable sequences of process steps for processing chemical substances and have matching modular dimensions. The components can also be implemented as stackable, self-supporting boxes.