ニガヨモギ
Chamazulene is an aromatic chemical compound with the molecular formula C14H16 found in a variety of plants including in chamomile ("Matricaria chamomilla"), wormwood ("Artemisia absinthium"), and yarrow ("Achillea millefolium"). It is a blue-violet derivative of azulene which is biosynthesized from the sesquiterpene matricin.