Voltage-gated sodium channel (Nav) inhibitor. 1 uM completely inhibits insect voltage-gated sodium channel inactivation (DmNav1 from D.melanogaster). Belongs to the sea anemone short toxin (type III) family. Opinions are divided on whether Anemonia viridis (Forsskal, 1775) and Anemonia sulcata (Pennant, 1777) are separate species.