Several coumarins, including 22-angeloyl-32-isovaleryl vaginate, archangelicin, oxypeucedanin hydrate, bergapten, byakangelicin angelate, imperatorin, isoimperatorin, isopimpinellin, 8-[ 2-( 3-methylbutroxy )-3-hydroxy-3-methylbutoxy ] psoralen, osthol, ostruthol, oxypeucedanin, phellopterin, psoralen and xanthotoxin, can be isolated from a chloroform extract of the roots of " A . archangelica " as well as several heraclenol derivatives.
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