5-Pyrimidinecarboxylic acid, 6-amino-1,2-dihydro-2-thioxo-, ethyl ester
5-Pyrimidinecarboxylic acid, 4-amino-2-mercapto-, ethyl ester
5-Pyrimidinecarboxylic acid, 4-amino-1,2-dihydro-2-thioxo-, ethyl ester
Ethyl 6-amino-1,2-dihydro-2-thioxo-5-pyrimidinecarboxylate
NSC 9308