5,4'-Dihydroxy-3,4,3'-trimethoxybibenzyl
5,4'-Dihydroxy-3,4,3'-trimethoxybibenzyl (compound 8) can be isolated from Dendrobium infundibulum (D. infundibulum). 5,4'-Dihydroxy-3,4,3'-trimethoxybibenzyl has no inhibitory activity against α-glucosidase and pancreatic lipase[1].