SB290157 trifluoroacetate is a potent and selective antagonist of C3a receptor(IC50 of 200 nM). SB 290157 is a competitive antagonist of 125I-C3a radioligand binding to rat basophilic leukemia-2H3 cells expressing the human C3aR (RBL-C3aR, IC50 of 200 nM).

Ellagic acid 3-O-α-L-rhamnopyranoside is a natural product found in the tuberous roots of [Potentilla anserina].

2',4'-Dihydroxydihydrochalcone has cytotoxic, and anti-inflammatory activities.