lignan (-)-Arctigenin (-)-Arctigenin 372.412 A lignan that has formula C21H24O6. C21H24O6 CAS:7770-78-7 CHEBI:79 COc1cc(C[C@@H]2[C@@H](Cc3ccc(OC)c(OC)c3)COC2=O)ccc1O InChI=1S/C21H24O6/c1-24-18-7-5-13(11-20(18)26-3)8-15-12-27-21(23)16(15)9-14-4-6-17(22)19(10-14)25-2/h4-7,10-11,15-16,22H,8-9,12H2,1-3H3/t15-,16+/m0/s1 KEGG:C10545 KNApSAcK:C00000609 LINCS:LSM-3183 NQWVSMVXKMHKTF-JKSUJKDBSA-N chebi_ontology