Assertion: periwinkle's alkaloid | /r/HasProperty | tetrahydroalstonine
Facets:
Source sentences:
text: The principal alkaloids present in the aerial (nonfloral) parts are VBL (vincaleukoblastine, VLB), VCR (leurocristine, vincaleurocristine), vincarodine, vincoline, leurocolombine, viramidine, vincathicine, vincubine, isositsirikine, vincolidine, lochrovicine, catharanthine, vindoline, leurosine, lochnerine, tetrahydroalstonine, and vindolinine.