Chamazulene, a blue-violet derivative of azulene, found in a variety of plants including in chamomile (Matricaria chamomilla), wormwood (Artemisia absinthium) and yarrow (Achillea millefolium) is biosynthesized from matricin.
^Ramadan M, Goeters S, Watzer B, Krause E, Lohmann K, Bauer R, Hempel B, Imming P (2006). "Chamazulene carboxylic acid and matricin: a natural profen and its natural prodrug, identified through similarity to synthetic drug substances". J Nat Prod. 69 (7): 1041–1045. doi:10.1021/np0601556. PMID 16872141.
