Arctigenin is a lignan found in certain plants of the Asteraceae;  it has shown antiviral and anticancer effects in glass.

(25R)-Ruscogenin-3-yl α-L-rhamnopyranosyl-(1→2)-[β-D-xylopyranosyl-(1→4)]-β-D-glucopyranoside (compound 1) is a steroidal saponin , can be isolated from the roots of Ophiopogon japonicus.

α-Guanidinoglutaric Acid is found in cobalt-induced epileptogenic focus tissue in the cerebral cortex of cats.