Senecionine is the hepatotoxic pyrrolizidine alkaloids isolated from Senecio vulgaris.

Kentsin, a contraceptive tetrapeptide, is originally extracted from hamster embryos. Kentsin prevents the maturation of Graafian follicles and consequently inhibits ovulation. Kentsin has opiate properties on gastrointestinal motility.

7-(4-Hydroxyphenyl)-1-phenyl-4-hepten-3-one as a beneficial compound to ameliorate the deleterious effects of Aβ on dendrite integrity and cell survival, and may provide new insights on drug discovery of Alzheimer's disease (AD).