Isocupressic acid ((+)-Isocupressic acid) is an abortifacient isolated from pine needles and bark that blocks progesterone production in bovine corpus luteum cells.
Acetylisocupressic acid is a natural product of Araucaria, Araucariaceae. The catalog number is TN3343 and the CAS number is 52992-82-2. Acetylisocupressic acid can be used as a reference standard.