NCIt definition : A stable, colorless, combustible liquid that emits toxic fumes of sulfoxide when heated
to decomposition. Methyl methanesulfonate is used for laboratory purposes as a catalyst
in chemical synthesis and has been tested clinically as a cancer chemotherapeutic
agent. This substance is an alkylating agent and acts as a mutagen by altering and
damaging DNA and is reasonably anticipated to be a human carcinogen. (NCI05);