Dioxocyclobutene compounds
 1-(4-Dialkylaminomethylpyrid-2-yloxypropylamino)-2-aminocyclobut-1-ene-3,4- dione compounds having histamine H.sub.2 -antagonist activity are disclosed. 
Smith Kline & French Laboratories Limited
C C
C07D C07D
inventional inventional
Rodney C. Thomas H.
Young Brown