has role is protonated form of independent continuant prostaglandin D2 CHEBI:15555 A member of the class of prostaglandins D that is prosta-5,13-dien-1-oic acid substituted by hydroxy groups at positions 9 and 15 and an oxo group at position 11 (the 5<i>Z</i>,9α,13<i>E</i>,15<i>S</i>- stereoisomer). prostaglandins D prostaglandin D2(1-) mouse metabolite human metabolite