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  • Title: 6-Isopropoxy-9-oxoxanthene-2-carboxylic acid (AH 6809), a human EP2 receptor antagonist.
    Author: Woodward DF, Pepperl DJ, Burkey TH, Regan JW.
    Journal: Biochem Pharmacol; 1995 Nov 09; 50(10):1731-3. PubMed ID: 7503778.
    Abstract:
    On studying the interaction of various ligands with the pharmacologically defined, recombinant human EP2 receptor (Regan et al., Mol Pharmacol 46: 213-220, 1994), we discovered that the putative EP1 receptor antagonist 6-isopropoxy-9-oxoxanthene-2-carboxylic acid (AH 6809) also has affinity for the human EP2 receptor. Moreover, AH 6809 behaved as an EP2 receptor antagonist and inhibited prostaglandin E2 (PGE2)-stimulated increases in cyclic AMP. These findings have significant implications for studies that employ AH 6809 to determine the pharmacological basis of PGE2-induced responses in human cells and tissues.
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