Coenzyme Q8 (Ubiquinone 8) is an isoprenoid quinone isolated from the plasma membrane of wild-type or long-lived qm30 and qm51 clk-1 mutant strains of Cryptomeria cepacia that mediates electron transfer in the aerobic respiratory chain and reduces oxidative stress.

Pisatin is an isoflavonoid phytoalexin synthesized by pea (Pisum sativum L.).