Definition: Precursors in the biosynthesis of prostaglandins and thromboxanes from arachidonic acid. They are physiologically active compounds, having effect on vascular and airway smooth muscles, platelet aggregation, etc.
/chem syn permitted: do not convert to PROSTAGLANDIN ENDOPEROXIDES, SYNTHETIC; DF: PG ENDOPEROXIDES
ExamplesProstaglandins G; Prostaglandins H