Kaempferol 7-O-glucosideKaempferol 7-O-glucoside is a flavonol glucoside. It can be found in Smilax china, and in the fern Asplenium rhizophyllum, and its hybrid descendants, as part of a complex with caffeic acid.DerivativesAmurensin is the tert-amyl alcohol derivative of kaempferol 7-O-glucoside. 6-''O-acetyl amurensin is found in the leaves of Phellodendron japonicum''.