Dehydrohexahydroxydiphenic acid

Dehydrohexahydroxydiphenic acid
Names
	IUPAC name 5,6,9,13,13-pentahydroxy-10-oxo-8-oxatricyclo[7.3.1.02,7]trideca-2,4,6,11-tetraene-3,12-dicarboxylic acid
	Other names Dehydrohexahydroxydiphenoyl; DHHDP
Identifiers
3D model (JSmol)	Interactive image;
PubChem CID	139031016;
	InChI InChI=1S/C14H10O11/c15-5-1-3(11(18)19)7-8-4(12(20)21)2-6(16)14(24,13(8,22)23)25-10(7)9(5)17/h1-2,8,15,17,22-24H,(H,18,19)(H,20,21) Key: ZMIDWLVYIBGXNC-UHFFFAOYSA-N;
	SMILES C1=C(C2C3=C(C(=C(C=C3C(=O)O)O)O)OC(C1=O)(C2(O)O)O)C(=O)O;
Properties
Chemical formula	C14H10O11
Molar mass	354.22 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Dehydrohexahydroxydiphenic acid is a group found in dehydroellagitannins. It is formed from hexahydroxydiphenic acid (HHDP) through oxidation of the plant hydrolysable tannins. It is found in ellagitannins such as euphorbin A, geraniin or mallotusinic acid.

In geraniin, it is forming an equilibrium mixture of six-membered hemi-ketal and five-membered hemi-ketal forms.

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