产品描述:
Procyanidin B4 is a polyphenol flavonoid dimer of (+)-catechin (Item No. 70940) and (–)-epicatechin (Item No. 11807) that has been found in Q. gilva and has diverse biological activities.{62678,51190} It scavenges DPPH (Item No. 14805) and superoxide radicals (IC50s = 12.15 and 8.67 µM, respectively).{62678} Procyanidin B4 inhibits nitric oxide (NO) production in RAW 264.7 macrophages (IC50 = 1.44 µM). It also inhibits activation of Epstein-Barr virus early antigen (EBV-EA) induced by phorbol 12-myristate 13-acetate (TPA; Item No. 10008014) in Raji cells.{51190}