Synonyms: AC1O5AUR;4-hydroxy-3-methyl-2-[(E)-pent-2-enyl]cyclopent-2-en-1-one; 3-[(E)-3-methoxy-2-methyl-3-oxoprop-1-enyl]-2,2-dimethylcyclopropane-1-carboxylic acid;6544-23-6;Cyclopropaneacrylic acid, 3-carboxy-alpha,2,2-trimethyl-, 1-methyl ester, mixt. with 4-hydroxy-3-methyl-2-(2-pentenyl)-2-cyclopenten-1-one, (+-)-