13,14-dihydro-15-keto Prostaglandin D2-d4 (13,14-dihydro-15-keto PGD2-d4) is intended for use as an internal standard for the quantification of 13,14-dihydro-15-keto PGD2 (Item No. 12610) by GC- or LC-mass spectrometry. 13,14-dihydro-15-keto PGD2 is a metabolite of PGD2 which is formed through the 15-hydroxy PGDH pathway. 13,14-dihydro-15-keto PGD2 was recently identified as a selective agonist for the CRTH2/DP2 receptor.1 It also inhibits ion flux in a canine colonic mucosa preparation.2 In humans, 13,14-dihydro-15-keto PGD2 is further metabolized to give 11β-hydroxy compounds which have also undergone β-oxidation of one or both side chains. Virtually no 13,14-dihydro-15-keto PGD2 survives intact in the urine.3,4WARNING This product is not for human or veterinary use.
