O-Acetylserine (OASS) is an acylated amino acid derivative. It is an intermediate in the biosynthesis of the common amino acid cysteine in bacteria and plants. Its presence in humans arises from either microbial metabolism in the gut or through consumption of foods containing OASS.

Justicidin C is an antiviral lignan. Justicidin C shows strong antiviral activity against vesicular stomatitis virus and low cytotoxicity against rabbit lung cells (RL-33) .

5-Hydroxy-3,6,7,4'-tetramethoxyflavone is a natural product for research related to life sciences.