(-)-Arctigenin ((-)-Arctigenin) is found in burdock. (-)-Arctigenin is isolated from Cnicus benedictus, Forsythia viridissima, Arctium lappa, Ipomoea cairica and others (CCD). Arctigenin is a lignan found in certain plants of the Asteraceae, including the Greater burdock (Arctium lappa) and Saussurea heteromalla. It has shown antiviral and anticancer effects. It is the aglycone of arctiin.
Neoarctin B is a natural product of Arctium, Asteraceae. The catalog number is TN6596 and the CAS number is 155969-67-8. Neoarctin B can be used as a reference standard.