Main Reaction: Lycopene >> Abscisic Alcohol + ABA Aldehyde + Xanthoxic acid

Reference: PubMed ID: 15940866
Authors: Fonseca JM, Rushing JW, Rajapakse NC, Thomas RL, Riley MB
Title: Parthenolide and abscisic acid synthesis in feverfew are associated but environmental factors affect them dissimilarly.
Published: 2005 May

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