Synonyms: (5E)-5-(3-Allyl-5-ethoxy-4-hydroxybenzylidene)-1-(2,3-dimethylphenyl)-2-thioxodihydropyrimidine-4,6(1H,5H)-dione;4,6(1H,5H)-pyrimidinedione, 1-(2,3-dimethylphenyl)-5-[[3-ethoxy-4-hydroxy-5-(2-propen-1-yl)phenyl]methylene]dihydro-2-thioxo-, (5E)-