Helenin

Helenin is a phytochemical mixture found in many plant species, including the Inula helenium (elecampane) of the Asteraceae family. It is a mixture of two isomeric sesquiterpene lactones, alantolactone and isoalantolactone.

In 1895 a German scientists Julius Bredt and Wilhelm Posh extracted helenin from Inula helenium and determined its physical and chemical properties.

单词	alantolactone
释义	alantolactone 英汉-汉英词典土木香内酯;阿兰内酯(一种驱伤虫药) 词组 \| 习惯用语您要查找的是不是： nonchalant adj. 若无其事的；冷静的；漠不关心的；无动于衷的 palaeontology n. 古生物学 paleontologist n. 古生物学者英语百科 Helenin Helenin is a phytochemical mixture found in many plant species, including the Inula helenium (elecampane) of the Asteraceae family. It is a mixture of two isomeric sesquiterpene lactones, alantolactone and isoalantolactone. In 1895 a German scientists Julius Bredt and Wilhelm Posh extracted helenin from Inula helenium and determined its physical and chemical properties.
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alantolactone

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Helenin