Onchidella binneyi

Ireland, C. and Faulkner, D. J., The defensive secretion of the opisthobranch mollusc Onchidella binneyi, Bioorg. Chem., 1, 125, 1978. 

One of the first interesting structures with cholinergic properties isolated from a marine source is the chemical onchidal. This compound was first isolated from the mollusc Onchidella binneyi and has an acetate ester similar to acetylcholine. Upon isolation, onchidal was discovered to be an active site-directed irreversible inhibitor of AChE (Abramson et ah, 1989). 

Ireland, C.L, and D.J. Faulkner The Defensive Secretion of the Opisthobranch Mollusk Onchidella binneyi. Bioorg. Chem. 7, 125-131 (1978). 

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