The molecule is a cyclic ketone that is the naturally occurring (4S,5R) enantiomer of the cis-isomer of isohumolone, produced during the brewing process due to thermal isomerism, which converts humulones to isohumulones via an acyloin-type ring contraction. It has a role as a plant metabolite. It is an enol, an enone, a tertiary alcohol, a cyclic ketone and a tertiary alpha-hydroxy ketone.
(4S,5R)-3,4-dihydroxy-2-(3-methylbutanoyl)-5-(3-methylbut-2-enyl)-4-(4-methylpent-3-enoyl)cyclopent-2-en-1-one