Morin (flavonol)

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Skeletal formula of morin
Ball-and-stick model of the morin molecule
IUPAC name
Other names
Morin hydrate
Calico Yellow
Toxylon pomiferum
Bois d'arc
Osage orange extract
3D model (JSmol)
Molar mass 302.238 g·mol−1
Density 1.799 g/mL
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Morin is a yellow chemical compound that can be isolated from Maclura pomifera (Osage orange), Maclura tinctoria (old fustic) and from leaves of Psidium guajava (common guava).[1] In a preclinical in vitro study, morin was found to be a weak inhibitor of fatty acid synthase with an IC50 of 2.33 μM.[2] Morin was also found to inhibit amyloid formation by islet amyloid polypeptide (or amylin) and disaggregate amyloid fibers.[3]

Morin exhibit inhibitory action against IgE-mediated allergic response. Morin treatment significantly down-regulated expressions of BLT2, NF-κB, and Th2-cytokine (TNF-α, IL-1β, IL-4, IL-6, and IL-13) in lungs of murine model of allergic asthma[4]

Morin can be used to test for the presence of aluminium or tin in a solution, since it forms characteristically fluorescent coordination complexes with them.



  1. ^ a b c Bacteriostatic effect of flavonoids isolated from leaves of Psidium guajava on fish pathogens. Rattanachaikunsopon Pongsak and Phumkhachorn Parichat, INIST:19087798
  2. ^ Tian, WX (February 2006). "Inhibition of Fatty Acid Synthase by Polyphenols". Current Medicinal Chemistry. 13 (8): 967–977. doi:10.2174/092986706776361012. PMID 16611078.
  3. ^ Noor, H; Cao, P; Raleigh, DP (March 2012). "Morin hydrate inhibits amyloid formation by islet amyloid polypeptide and disaggregates amyloid fibers". Protein Science. 21 (3): 373–82. doi:10.1002/pro.2023. PMC 3375438. PMID 22238175.
  4. ^ Kandhare, A. D., Liu, Z., Mukherjee, A. A., & Bodhankar, S. L. (2019). Therapeutic potential of Morin in Ovalbumin-induced allergic asthma via modulation of SUMF2/IL-13 and BLT2/NF-kB signaling pathway. Current molecular pharmacology. doi:10.2174/1874467212666190102105052