Synonyms: 5,7-Dihydroxy-11-ketotetranorprosta-1,16-dioicacid; 5,7-Dihydroxy-11-oxotetranorprosta-1,16-dioic acid;9,11-Dihydroxy-15-keto-2,3,4,5-tetranorprosta-1,20-dioic acid;9,11-Dihydroxy-15-ketotetranorprosta-1,20-dioic acid;9,11-Dihydroxy-15-oxo-2,3,4,5-tetranorprosta-1,20-dioic acid;9,11-Dihydroxy-15-oxotetranorprosta-1,20-dioic acid