An alternate name or variant form of coniine or related alkaloid compounds from hemlock plants.
From coniine with the -eine suffix variant, showing early chemical nomenclature before standardized IUPAC naming conventions were established.
The spelling variations of hemlock poison (coniine, coniceine, coniiene) are a window into 19th-century chemistry before international standards—each chemist's lab had slightly different names for the same deadly molecule.
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