Cytochrome P450 involved in the production of catechol-substituted substrates needed for the arabidopyrones biosynthesis. Converts p-coumaraldehyde into caffealdehyde. Expressed in seedlings, roots, stems and inflorescence nodes. Low or no expression in leaves, flowers, seeds and lignifying tissue. Deficient in arabidopyrones, but normal amounts of sinapate esters. Arabidopyrones are derived from phenylalanine instead of tyrosine like other ring-cleavage-derived plant metabolites. Belongs to the cytochrome P450 family.