13139-97-4 2(1H)-Pyrimidinethione, 4,6-dimethyl- 22325-27-5 4,6-Dimethyl-2(1H)-pyrimidinethione 4,6-Dimethyl-2-mercaptopyrimidine 4,6-Dimethyl-2-thiopyrimidine 4,6-Dimethylpyrimidine-2-thione EINECS 244-911-3