2-Pyrimidinethiol, 1 H-pyrimidine-2-thione, 2-Pyrimidinethione, 2-Mercaptopyrimidine, 2(1H)-Pyrimidinethione, 2-Thio-4-deoxyuracil, 1H-Pyrimidine-2-thiol, PYRIMIDINE-2-THIOL, 2-Thiopyrimidine, pyrimidinthione, pyrimidine-2-thione, pyrimidine-2(1H)-thione