Description_x000D_ Packaging_x000D_ 5, 25 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ PF-04995274 is a potent partial agonist of serotonin 5HT4 receptor with Ki = 0.15 - 0.46 nM for 5-HT4 isoforms a, b, d and e. 5-HT4 agonists modulate cholinergic function are being studied as possible treatment for cognitive disorders associated with Alzheimer′s Disease. PF-04995274 is brain penetrant and was shown to increase brain acetylcholine levels and reversed scopolamine-induced learning deficits in the rat Morris water maze test._x000D_ Other Notes_x000D_ This compound was developed by Pfizer for Neuroscience research. To learn more about Sigma′s partnership with Pfizer and view other authentic, high-quality Pfizer compounds, visit sigma.com/bsm-pfizer._x000D_ To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here._x000D_ Legal Information_x000D_ Sold for research purposes under agreement from Pfizer Inc._x000D_ Pfizer is a registered trademark of Pfizer, Inc.