Thiomersal
Compounds
Thiomersal, or thimerosal, also sold under the name merthiolate is an organomercury compound. It is a well-established antiseptic and antifungal agent.
The pharmaceutical corporation Eli Lilly and Company named it Merthiolate. Wikipedia
IUPAC ID: Ethyl(2-mercaptobenzoato-(2-)-O,S) mercurate(1-) sodium