From Wikipedia, the free encyclopedia. This is a list of chemotherapeutic agents (also known as cytotoxic agents) that are known to be of use in chemotherapy for cancer. This list is organized by type of agent, although the subsections are not necessarily definitive and are subject to revision.ach drug is listed once (at present), though it might fall in more than one subsection. A full alphabetical listing is included after the categorical listing. The agents in this list are often combined into chemotherapy regimens for polychemotherapy (combination chemotherapy).