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UR-AK49: Wikis


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Systematic (IUPAC) name
CAS number  ?
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PubChem  ?
Chemical data
Formula C 16H27N5O 
Mol. mass 305.417 g/mol
SMILES eMolecules & PubChem
Synonyms UR-AK49
Pharmacokinetic data
Bioavailability  ?
Metabolism  ?
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Legal status
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UR-AK49 is a drug used in scientific research which acts as a potent antagonist for the Neuropeptide Y / Pancreatic polypeptide receptor Y4, and also as a partial agonist at the histamine receptors H1 and H2.[1] UR-AK49 is a pure antagonist at Y4 with no partial agonist effects, and although it is only slightly selective for Y4 over the related Y1 and Y5 receptors, as the first non-peptide Y4 antagonist developed UR-AK49 is expected to be useful in the study of this receptor and its role in the body.[2]


  1. ^ Xie SX, Kraus A, Ghorai P, Ye QZ, Elz S, Buschauer A, Seifert R (June 2006). "N1-(3-cyclohexylbutanoyl)-N2-[3-(1H-imidazol-4-yl)propylguanidine (UR-AK57), a potent partial agonist for the human histamine H1- and H2-receptors"]. The Journal of Pharmacology and Experimental Therapeutics 317 (3): 1262–8. doi:10.1124/jpet.106.102897. PMID 16554355.  
  2. ^ Ziemek R, Schneider E, Kraus A, Cabrele C, Beck-Sickinger AG, Bernhardt G, Buschauer A (2007). "Determination of affinity and activity of ligands at the human neuropeptide Y Y4 receptor by flow cytometry and aequorin luminescence". Journal of Receptor and Signal Transduction Research 27 (4): 217–33. doi:10.1080/10799890701505206. PMID 17885919.  


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