6-AMino-2-pyriMidinethione, 4-Amino-6-mercaptopurine, 4-AMinothio-2-pyriMidinone, 4-Amino-2-mercaptopyrimidine, 2(1H)-Pyrimidinethione, 4-amino-, THIOCYTOSINE, 4-AMINO-2-THIOPYRIMIDINE, 4-aminopyrimidine-2-thione, 4-aminopyrimidine-2-thiol, 2-THIOCYTOSINE, Cytosine,2-thio, 4-amino-2-pyrimidine-thiol, 2-mercapto-4-Aminopyrimidine, Cytosine,thio