2,3-dinor-11B-Prostaglandin F2a-d9

2,3-dinor-11B-PGF2a-d9 is intended for use as an internal standard for the quantification of 2,3-dinor-11B-PGF2a (Item No. 16530) by GC- or LC-MS. 2,3-dinor-11B-PGF2a is a metabolite of PGD2 (Item No. 12010).{418,15162} Urinary excretion of 2,3-dinor-11B-PGF2a is increased in patients with mast cell activation disease (MCAD) and has been used as a marker of increased PGD2 levels.{60971} 2,3-dinor-11B-PGF2a levels are also increased in the urine of patients with asthma and are positively correlated with impaired lung function.{60972}