Eckol

Eckol
Names
	Preferred IUPAC name 4-(3,5-Dihydroxyphenoxy)oxanthrene-1,3,6,8-tetrol
	Other names 1-(3,5-Dihydroxyphenoxy)-2,4,7,9-tetrahydroxydibenzo-1,4-dioxin
Identifiers
CAS Number	88798-74-7 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:65819 ;
ChEMBL	ChEMBL471187 ;
ChemSpider	128740 ;
PubChem CID	145937;
UNII	4A5E8354UB ;
CompTox Dashboard (EPA)	DTXSID40237333 ;
	InChI InChI=1S/C18H12O9/c19-7-1-8(20)3-10(2-7)25-16-12(23)6-13(24)17-18(16)27-15-11(22)4-9(21)5-14(15)26-17/h1-6,19-24H Key: PCZZRBGISTUIOA-UHFFFAOYSA-N ; InChI=1/C18H12O9/c19-7-1-8(20)3-10(2-7)25-16-12(23)6-13(24)17-18(16)27-15-11(22)4-9(21)5-14(15)26-17/h1-6,19-24H Key: PCZZRBGISTUIOA-UHFFFAOYAJ;
	SMILES C1=C(C=C(C=C1O)OC2=C(C=C(C3=C2OC4=C(C=C(C=C4O3)O)O)O)O)O;
Properties
Chemical formula	C18H12O9
Molar mass	372.285 g·mol−1
	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

Eckol is a phlorotannin isolated from brown algae in the family Lessoniaceae such as species in the genus Ecklonia such as E. cava or E. kurome or in the genus Eisenia such as Eisenia bicyclis.

The molecule possesses a dibenzo-p-dioxin skeleton and a phloroglucinol component. The molecule can also be viewed as a phloroglucinol trimer.

It exhibits an antiplasmin inhibitory effect and a radioprotective effect in a mouse model. It also exhibits an in vitro cytoprotective effect against oxidative stress in Chinese hamster lung fibroblasts. It also shows antithrombotic and profibrinolytic activities.