Isoquercetin, isoquercitrin or isotrifoliin is a flavonoid, a type of chemical compound. It is the 3-O-glucoside of quercetin. Isoquercitrin can be isolated from various plant species including Mangifera indica (mango) and Rheum nobile (the Noble rhubarb). It is also present in the leaves of Annona squamosa, Camellia sinensis (tea). and Vestia foetida
{{chembox | verifiedrevid = 444328279 | Name = Isoquercetin | ImageFile = Isoquercitin.svg | ImageSize = 250px | ImageName = Isoquercitrin structure | IUPACName = 3-(β-D-Glucopyranosyloxy)-3′,4′,5,7-tetrahydroxyflavone | SystematicName = 2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-3-{[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-4H-1-benzopyran-4-one | OtherNames= IsoquercitrosideIsoquercitrinIsoquercetinTrifoliinIsotrifolinTrifoliin AIsohyperosideIsotrifoliinQuercetin-3-glucosideQuercetin-3-O-glucosideQuercetin 3-O-β-D-glucopyranoside |Section1= |Section2= }} Isoquercetin, isoquercitrin or isotrifoliin is a flavonoid, a type of chemical compound. It is the 3-O-glucoside of quercetin. Isoquercitrin can be isolated from various plant species including Mangifera indica (mango) and Rheum nobile (the Noble rhubarb). It is also present in the leaves of Annona squamosa, Camellia sinensis (tea). and Vestia foetida
== Spectral data == The lambda-max for isoquercetin is 254.8 and 352.6 nm.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).