103969-58-0 2(1H)-Quinolinone, 6-(3,6-dihydro-2-oxo-2H-1,3,4-thiadiazin-5-yl)-3,4-dihydro- 6-(3,6-Dihydro-2-oxo-2H-1,3,4-thiadiazin-5-yl)-3,4-dihydro-2(1H)-quinolinone Y 20487 Y-20487 Y20487