Barbatic acid

Barbatic acid
Names
	IUPAC name 2-Hydroxy-4-(2-hydroxy-4-methoxy-3,6-dimethylbenzoyl)oxy-3,6-dimethylbenzoic acid
	Other names Barbatinic acid
Identifiers
CAS Number	17636-16-7;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:144123;
ChEMBL	ChEMBL1902081;
ChemSpider	146680;
PubChem CID	167666;
CompTox Dashboard (EPA)	DTXSID40170115 ;
	InChI InChI=1S/C19H20O7/c1-8-7-13(11(4)16(20)14(8)18(22)23)26-19(24)15-9(2)6-12(25-5)10(3)17(15)21/h6-7,20-21H,1-5H3,(H,22,23) Key: NMKBRSYSHBPUPY-UHFFFAOYSA-N;
	SMILES CC1=CC(=C(C(=C1C(=O)OC2=C(C(=C(C(=C2)C)C(=O)O)O)C)O)C)OC;
Properties
Chemical formula	C19H20O7
Molar mass	360.362 g·mol−1
Melting point	187 °C (369 °F; 460 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Barbatic acid is an organic compound that is made by some lichens. It is in the structural class known as depsides. It is particularly common in the genera Usnea (the beard lichens) and Cladonia.