Ergocryptinine is the ergot alkaloid. Ergotaminine, ergocryptinine, ergosinine and ergocorninine show vasoconstrictory effect, i.e. they cause the contraction of smooth muscles of blood vessels. Ergocryptinine shortened the duration of arrhythmia induced by adrenalin in rats. Ergocryptinine, ergocristinine and ergocorninine can be used in the treatment of arterial hypertension, heart insufficiency, heart arrhythmia and cephalalgia.

Alpha-Terthienyl is a pigment in African marigolds (Tagetes spp.) and exhibits antifungal, insecticidal, and nematicidal properties related to its ability to sensitize the formation of singlet oxygen. Terthiophene is the compound responsible for the insecticidal activity of Tagetes minuta. Alpha-Terthienyl is also used as building block in the production of organic semiconductors.