Bergenin

Bergenin
Names
	Preferred IUPAC name (2R,3S,4S,4aR,10bS)-3,4,8,10-Tetrahydroxy-2-(hydroxymethyl)-9-methoxy-3,4,4a,10b-tetrahydropyrano[3,2-c][2]benzopyran-6(2H)-one
	Other names Cuscutin
Identifiers
CAS Number	477-90-7 (anhydrous) ; 5956-63-8 (unspecified hydrate) ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL273019 ;
ChemSpider	59455 ;
ECHA InfoCard	100.230.534
PubChem CID	66065;
UNII	L84RBE4IDC ;
CompTox Dashboard (EPA)	DTXSID4048141 ;
	InChI InChI=1S/C14H16O9/c1-21-11-5(16)2-4-7(9(11)18)12-13(23-14(4)20)10(19)8(17)6(3-15)22-12/h2,6,8,10,12-13,15-19H,3H2,1H3/t6-,8-,10+,12+,13-/m1/s1 Key: YWJXCIXBAKGUKZ-HJJNZUOJSA-N ;
	SMILES OC[C@@H](O1)[C@@H](O)[C@H](O)[C@@H]2[C@@H]1c3c(O)c(OC)c(O)cc3C(=O)O2;
Properties
Chemical formula	C14H16O9
Molar mass	328.27 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Bergenin, alias cuscutin, is trihydroxybenzoic acid glycoside. It is the C-glycoside of 4-O-methyl gallic acid. It possesses an O-demethylated derivative called norbergenin. These are chemical compounds and drugs of Ayurveda, commonly known as Paashaanbhed. It shows a potent immunomodulatory effect.

Bergenin can be isolated from Bergenia species like Bergenia ciliata and Bergenia ligulata, from rhizomes of Bergenia stracheyi. It is also found in the stem bark of Dryobalanops aromatica, in Ardisia elliptica and in Mallotus japonicus.

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