Formulation: A solution in methyl acetate
Formal Name: 9,15-dioxo-11α-hydroxy-prost-5Z-en-1-oic-3,3,4,4-d4 acid
Purity: ≥99% deuterated forms (d1-d4)
Formula Markup: C20H28D4O5
Formula Weight: 356,5
Shelf life (days): 365
Notes: 13,14-dihydro-15-keto Prostaglandin E2-d4 (13,14-dihydro-15-keto PGE2-d4) is intended for use as an internal standard for the quantification of 13,14-dihydro-15-keto PGE2 (Item No. 14650) by GC- or LC-MS. 13,14-dihydro-15-keto PGE2 is a metabolite of PGE2 (Item No. 14010) and the primary PGE2 metabolite in plasma.{182,2777} It is formed from PGE2 via a 15-keto PGE2 intermediate by 15-oxo-PG Δ13 reductase.{2777} Unlike PGE2, 13,14-dihydro-15-keto PGE2 does not bind effectively to the PGE2 receptors EP2 and EP4 expressed in CHO cells (Kis = 12 and 57 µM, respectively) or induce adenylate cyclase activity in the same cells (EC50s = >18 and >38 µM, respectively). Levels of 13,14-dihydro-15-keto PGE2 are increased in the plasma of women in the third trimester of pregnancy and in women during and immediately after labor and delivery.{64194} Levels of 13,14-dihydro-15-keto PGE2 levels are decreased in tumor tissue compared to adjacent non-cancerous tissue isolated from patients with non-small cell lung cancer (NSCLC).{64195}
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