Pyrimidones having histamine H.sub.2 -antagonist activity
 The compounds of this invention are 5-[dialkylaminoalkylfuranyl (or thienyl, phenyl or pyridyl)]-4-pyrimidones having histamine H.sub.2 -antagonist activity. A specific compound of this invention is 2-[2-(5-dimethylaminomethyl-2-furanylmethylthio)ethylamino]-5-(5-dimethyla minomethyl-2-furanylmethyl)-4-pyrimidone. 
Smith Kline & French Laboratories Limited
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Thomas H.
Brown