Chlorobutanol hemihydrate (Chlorbutol hemihydrate) is an orally toxic preservative with antimicrobial activity that inhibits Gram-positive and Gram-negative bacteria and fungi, inhibits the aggregation and release of human platelets in vitro, and is commonly used in cosmetics.

8-Acetyl-7-Hydroxycoumarin is a natural compoundwith Antifungal and antibacterial activities.

Columbianetin is a new phytoalexin associated with celery (Apium graveolens) resistance to pathogens during storage it also has antifungal activity. Columbianetin has anti-inflammatory effects it promotes histamine release and inhibits the histamine release by substance P suggests that it may be helpful in regulating mast cell-mediated allergic inflammatory responses. (2'S)-columbianetin can be effectively used to protect keratinocytes from UVB induced damage.