Guanidinothiazolyl derivatives
 The compounds are guanidinothiazolyl derivatives which are histamine H.sub.2 -antagonists. A specific compound of the present invention is 2-[2-(2-guanidino-4-thiazolylmethylthio)ethylamino]-5-(6-methyl-3-pyridylm ethyl)-4-pyrimidone. 
Smith Kline & French Laboratories Limited
C A
C07D A61P
inventional inventional
Graham J. Thomas H.
Durant Brown