nemertelline nemertelline nemertelline is a neurotoxic tetra-pyridine compound originally found in the marine hoplonemertine worm amphiporus angulatus. these worms produce a variety of toxins which are used both in hunting their prey and in defending themselves from predators. interest in potential application of this compound as an antifouling agent for boats and other marine installations has led to attempts to produce it synthetically by convenient routes. its toxicity is similar to nicotine in crustaceans but has no mammalian toxicity. it is similar to nicotelline in structure. nemertelline names preferred iupac name 13,22:23,34:32,43-quaterpyridine identifiers cas number 59697-14-2 3d model (jsmol) interactive image chemspider 2305572 kegg c17016 mesh nemertelline pubchem cid 3042423 unii 45m2t55wtp y comptox dashboard (epa) dtxsid80208401 inchi inchi=1s/c20h14n4/c1-4-16(13-21-8-1)19-12-15(7-11-23-19)18-6-3-10-24-20(18)17-5-2-9-22-14-17/h1-14hkey: swwrilugnliygg-uhfffaoysa-n smiles c1=cn=cc(=c1)c1=cc(=cc=n1)c1=c(n=cc=c1)c1=cc=cn=c1 properties chemical formula c20h14n4 molar mass 310.360 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references