Allotetrahydrocortisol (5a-Tetrahydrocortisol) is a primary metabolite of cortisol, the main glucocorticoid in humans.

[(2E,4E)-Octadienoyl]-N-isobutylamide (compound 2) 是一种可从胡椒种子中提取的异丁酰胺。

O-Methylcassythine 是一种来源于 Cassytha filiformis 的阿朴啡生物碱，具有血管舒张作用。

Trigalacturonic acid is an oligosaccharide that inhibits proteinase activity in tomato plants (ED50 = 2.6 μg/plant).

Metformin hydroxy analog 2, an oxidation product of the biguanide metformin (1), represents a chemically transformed variant of the original compound, showcasing a modified molecular structure through the process of oxidation.

Piliformic acid is a fungal metabolite that has been found inN. pseudotrichiaand has diverse biological activities.1,2It is cytotoxic to BC-1 human breast cancer cells (IC50= 5 μg/ml).2Piloformic acid is active againstL. braziliensisamastigotes (IC50= 78.5 μM). It is also active against the plant pathogenic fungiC. gloeosporioides(MIC = 292 μM).1 1.Elias, L.M., Fortkamp, D., Sartori, S.B., et al.The potential of compounds isolated from Xylaria spp. as antifungal agents against anthracnoseBraz. J. Microbiol.49(4)840-847(2018) 2.Cota, B.B., Tunes, L.G., Maia, D.N.B., et al.Leishmanicidal compounds of Nectria pseudotrichia, an endophytic fungus isolated from the plant Caesalpinia echinata (Brazilwood)Mem. Inst. Oswaldo Cruz113(2)102-110(2018)

Cholesteryl palmitoleate, a cholesterol ester, exhibits elevated plasma levels in ApoE-/- mice following exposure to cigarette smoke and in pediatric patients diagnosed with biliary atresia. It serves as a standard for identifying cholesterol esters in human meibomian gland secretions.

Dihydrocarminomycin is an anthracycline antibiotics.

Suberylglycine is an acyl glycine that is a normally minor metabolite of fatty acid.