S-(5'-Adenosyl)-L-methionine chloride is a natural product. S-(5'-Adenosyl)-L-methionine chloride can be used as a reference standard.

Cyclo(L-Pro-L-Val), a 2,5-diketopiperazine extracted from the fruits of Mycobacterium chiliolyticum AZ2 and Mycobacterium leprae, possesses anti-inflammatory activity and virulence activity against phytopathogenic microorganisms (e.g., R. fascians LMG 3605) and inhibits Gram-positive plant pathogens.

牛蒡甙元是一种在某些菊科植物中发现的木酚素； 它在玻璃中显示出抗病毒和抗癌作用。