Plenolin, from Helenium microcephalum, is an anti-tumor agent. References: Staneva J, Denkova P, Todorova M, Evstatieva L. Quantitative analysis of sesquiterpene lactones in extract of Arnica montana L. by 1H NMR spectroscopy. J Pharm Biomed Anal. 2011 Jan 5;54(1):94-9. doi: 10.1016/j.jpba.2010.08.018. Epub 2010 Aug 21. PubMed PMID: 20837387.

纯度：≥98%

CAS：34257-95-9