83395-28-2 Butyl 7-(3,6-dihydro-1(2H)-pyridyl)-2-oxo-2H-(1,2,4)-oxadiazolo(2,3-c)pyrimidine-5-carbamate Carbamic acid, (7-(3,6-dihydro-1(2H)-pyridinyl)-2-oxo-2H-(1,2,4)oxadiazolo(2,3-c)pyrimidin-5-yl)-, butyl ester