Inquiry Product - 3-O-β-D- Galactosyl( 1→3)-β-D-glucosyl( 1→3)-α-L-rhamnosyl(1→2)-α-L-arabinosyl-Oleanolic acid - 28-O-α-L-rhamnosyl(1→4)β-D-glucosyl( 1→6)-β-D-glucoside(Standard Reference Material)