Synonyms: (-)-3,4,5-Trihydroxy-2,4-bis(3-methyl-2-butenyl)-6-(2-methyl-1-oxopropyl)-2,5-cyclohexadien-1-one;(-)-Cohumulone;Cohumulone;2,5-Cyclohexadien-1-one, 3,4,5-trihydroxy-2-isobutyryl-4,6-bis(3-methyl-2-butenyl)-;5-(alpha,beta-Dibromophenethyl)-5-methylhydantoin