2,6-Dimercapto-5-methyl-4-pyrimidinecarboxylic acid 2,6-Dithio-5-methyl-4-carboxy pyrimidine 4-Pyrimidinecarboxylic acid, 1,2,3,6-tetrahydro-5-methyl-2,6-dithioxo- (9CI) 4-Pyrimidinecarboxylic acid, 2,6-dimercapto-5-methyl- 74039-18-2 NSC 98534