<unk>  are organic compounds that include a phosphorus-sulfur bond.
Many of these compounds are quite toxic, and some are used as pesticides. Examples of these include:
Chlorpyrifos
Diazinon
Fenitrothion
Fenthion
Malathion
Parathion
However, several others have medical uses, including:
Amifostine
Echothiophate
ThioTEPA
Organothiophosphates
Oxoacid
Clathrate compound
Organophosphate
Antimetabolite
Antacid
Diazonium compound
Retinoid