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Identification of Oenanthotoxin and Related Compounds in Hemlock Water Dropwort Poisoning

1 The case histories are presented of three separate incidents of poisoning by ingestion of Hemlock Water Dropwort tubers (Oenanthe crocata). Two of these cases involved a fatality. 2 An analytical profile is provided for oenanthotoxin, the major toxic principal of the tubers. Chromatographic, spectroscopic and mass spectral data for related compounds are also given.