Brevetoxin, or brevetoxins, are a suite of cyclic polyether compounds produced naturally by a species of dinoflagellate known as Karenia brevis. Brevetoxins are neurotoxins that bind to voltage-gated sodium channels in nerve cells, leading to disruption of normal neurological processes and causing the illness clinically described as Neurotoxic Shellfish Poisoning (NSP). Brevetoxin A Brevetoxin B chemical structure subtypes Brevetoxin-1 (PbTx-1) R = -CH2C(=CH2)CHO Brevetoxin-7 (PbTx-7)… (More on Brevetoxin)