has role has functional parent (+)-catechin antioxidant proanthocyanidin procyanidin B4 (2R,2'R,3S,3'R,4S)-2,2'-bis(3,4-dihydroxyphenyl)-3,3',4,4'-tetrahydro-2H,2'H-4,8'-bichromene-3,3',5,5',7,7'-hexol 578.52020 A proanthocyanidin obtained by the condensation of (-)-epicatechin and (+)-catechin units. C30H26O12 CAS:29106-51-2 CHEBI:26268 CHEBI:27589 CHEBI:8447 HMDB:HMDB13690 InChI=1S/C30H26O12/c31-13-7-20(37)24-23(8-13)41-29(12-2-4-16(33)19(36)6-12)27(40)26(24)25-21(38)10-17(34)14-9-22(39)28(42-30(14)25)11-1-3-15(32)18(35)5-11/h1-8,10,22,26-29,31-40H,9H2/t22-,26+,27+,28-,29-/m1/s1 KEGG:C10238 KNApSAcK:C00002935 LIPID_MAPS_instance:LMPK12030004 O[C@@H]1Cc2c(O)cc(O)c([C@H]3[C@H](O)[C@H](Oc4cc(O)cc(O)c34)c3ccc(O)c(O)c3)c2O[C@@H]1c1ccc(O)c(O)c1 PMID:17638329 PMID:17851427 PMID:22253995 PMID:22320845 Patent:US2010047372 Patent:WO2010021935 Procyanidin B4 Reaxys:3647174 Wikipedia:Procyanidin_B4 XFZJEEAOWLFHDH-VUGKQVTMSA-N catechin-(4alpha->8)-epicatechin chebi_ontology antineoplastic agent EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor hydroxyflavan (-)-epicatechin