Synonyms: 5-Pyrimidinecarboxylicacid, 1,2,3,4-tetrahydro-4-oxo-2-thio-, ethyl ester (8CI);2-Mercapto-5-carbethoxyuracil;5-Carbethoxy-2-thiouracil;Ethyl 2-mercapto-4-hydroxypyrimidine-5-carboxylate;NSC 11999;NSC 1584;ethyl 4-oxo-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate;