has role is protonated form of has functional parent ochratoxin alpha ochratoxin A(1-) mycotoxin monocarboxylic acid amide organochlorine compound calcium channel blocker isochromanes carcinogenic agent teratogenic agent nephrotoxin Aspergillus metabolite Penicillium metabolite ochratoxin A CHEBI:7719 A phenylalanine derivative resulting from the formal condensation of the amino group of <small>L</small>-phenylalanine with the carboxy group of (3<i>R</i>)-5-chloro-8-hydroxy-3-methyl-1-oxo-3,4-dihydro-1<em>H</em>-2-benzopyran-7-carboxylic acid (ochratoxin α). It is among the most widely occurring food-contaminating mycotoxins, produced by <em>Aspergillus ochraceus</em>, <em>Aspergillus carbonarius</em> and <em>Penicillium verrucosum</em>. N-acyl-L-phenylalanine