monocrotaline en · NOUN
Meanings
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(uncountable) A pyrrolizidine alkaloid found in the rattlebox plants (of genus Crotalaria) that is poisonous to livestock and humans.
Generally the pyrrolizidine alkaloids exist in plants as N-oxides, as shown for monocrotaline and seneciphylline.
2010, Eric David Morgan, Biosynthesis in Insects, page 320: