Valoneic acid is a hydrolysable tannin. It is a component of some hydrolysable tannins such as mallojaponin.

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Valoneic acid

Names
Other names Valoneaic acid
Identifiers
CAS Number	517-54-4 N
3D model (JSmol)	Interactive image
ChemSpider	26233367 Y
PubChem CID	12444662
UNII	G4WG3M7WNB Y
CompTox Dashboard (EPA)	DTXSID60498505
InChI InChI=1S/C21H14O13/c22-11-1-6(8(19(28)29)3-12(11)23)7-2-13(24)15(5-9(7)20(30)31)34-18-10(21(32)33)4-14(25)16(26)17(18)27/h1-5,22-27H,(H,28,29)(H,30,31)(H,32,33) Y Key: YIWUPYVTWJLBDH-UHFFFAOYSA-N Y InChI=1/C21H14O13/c22-11-1-6(8(19(28)29)3-12(11)23)7-2-13(24)15(5-9(7)20(30)31)34-18-10(21(32)33)4-14(25)16(26)17(18)27/h1-5,22-27H,(H,28,29)(H,30,31)(H,32,33) Key: YIWUPYVTWJLBDH-UHFFFAOYAX
SMILES c1c(c(cc(c1O)O)C(=O)O)c2cc(c(cc2C(=O)O)Oc3c(cc(c(c3O)O)O)C(=O)O)O
Properties
Chemical formula	C21H14O13; C21H14O15
Molar mass	474.32 g/mol, 506.32 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

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The difference with its isomer sanguisorbic acid is that the hydroxyl that links the hexahydroxydiphenoyl (HHDP) group to the galloyl group belongs to the HHDP group.

It can be chemically synthesized.^[1]

• Sanguisorbic acid
• Valonea (Quercus macrolepis)
• Valoneic acid dilactone