"5-Bromouracil" . "5-bromouracil" . . "5- bromouracil" . . . . . "bromouracil" . "5-Bromopyrimidine-2,4-dione" . . "5-Bromo-2,4-dihydroxypyrimidine" . . . . . . "5-Bromouracil" . "5-Bromopyrimidine-2,4(1H,3H)-dione" . . . . .