5-LOX inhibitor (1-(sec-Butyl)-4-(4-(4-(4-hydroxyphenyl)piperazin-1-yl)phenyl)-1H-1,2,4-triazol-5(4H)-one) is one of the impurities of itraconazole, a selective LOX-5 inhibitor.

2,5-Di-tert-butylhydroquinone (BHQ) is an effective and selective endoplasmic reticulum Ca2+-ATPase inhibitor.

Montelukast sodium (MK0476) is an orally available leukotriene receptor antagonist which is widely used for the prophylaxis and chronic treatment of asthma and has been linked to rare cases of clinically apparent liver injury.

Caffeic Acid is an orally bioavailable, hydroxycinnamic acid derivative and polyphenol, with potential anti-oxidant, anti-inflammatory, and antineoplastic activities.

Bestatin (Ubenimex) competitively inhibits many aminopeptidases, including B, N and leucine aminopeptidases. Ubenimex is a microbial metabolite and dipeptide with potential immunomodulatory and antitumor activities. Aminopeptidases has been implicated in the process of cell adhesion and invasion of tumor cells. Therefore, inhibiting aminopeptidases may partially attribute to the antitumor effect of ubenimex. This agent also activates T lymphocyte, macrophage, and bone marrow stem cell as well as stimulates the release of interleukin-1 and -2, thus further enhances its antitumor activity.

Abietic Acid (Sylvic acid) is a diterpene extracted from Pimenta racemosavar. grissea with antimicrobial, antiproliferative and anti-obesity activities. It inhibits lipoxygenase activity and may be studied in allergic diseases.

Diethylcarbamazine citrate (Caritrol) is an anthelmintic used primarily as the citrate in the treatment of filariasis, particular infestations with Wucheria bancrofti or Loa loa. It is an inhibitor of arachidonic acid metabolism in filarial microfilaria.

Tebufelone is a potent in vitro inhibitor of CO , a novel non-steroidal anti-inflammatory drug (NSAID) belonging to the di-tert-butylphenol (DTBP) class that has shown potent anti-inflammatory, analgesic and anti-reticulitis properties in various animal models. Tebufelone potently inhibits the formation of prostaglandins (PGE2) and blocks the formation of lipoxygenase pathway products [leukotriene (LTB4)] in rat macrophages (IC50 = 20 microM) and human whole blood (IC50 = 22 microM) in vitro. = 20 microM) and human whole blood (IC50 = 22 microM) from the formation of lipoxygenase pathway products [leukotriene (LTB4)] in vitro.