Gallocatechol

Gallocatechol or gallocatechin (GC) is a flavan-3-ol, a type of chemical compound including catechin, with the gallate residue being in an isomeric trans position.

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Gallocatechol

Names
Other names (+)-Gallocatechin
Identifiers
CAS Number	970-73-0 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:68330 Y
ChEMBL	ChEMBL125743 Y
ChemSpider	58594 Y
KEGG	C12127
MeSH	Gallocatechol
PubChem CID	65084
UNII	HEJ6575V1X Y
InChI InChI=1S/C15H14O7/c16-7-3-9(17)8-5-12(20)15(22-13(8)4-7)6-1-10(18)14(21)11(19)2-6/h1-4,12,15-21H,5H2/t12-,15+/m0/s1 Y Key: XMOCLSLCDHWDHP-SWLSCSKDSA-N Y
SMILES C1[C@@H]([C@H](OC2=CC(=CC(=C21)O)O)C3=CC(=C(C(=C3)O)O)O)O
Properties
Chemical formula	C15H14O7
Molar mass	306.270 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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This compound possesses two epimers. The most common, (+)-gallocatechin (GC), is found notably in green tea. The other enantiomer is called (−)-gallocatechin or ent-gallocatechin. It was first isolated from green tea by Michiyo Tsujimura in 1934.^[1]

Epigallocatechin is another type of catechin, with the gallate residue being in an isomeric cis position. It can be found in St John's wort.^[2]