2-Amino-1,3,5-triazine-4,6-dithiol2770-75-4100 % similar Ammelide645-93-242 % similar 4,6-Diamino-2-mercaptopyrimidine1004-39-341 % similar 3-Amino-5-mercapto-1,2,4-triazole16691-43-340 % similar 8-Mercaptoguanine28128-40-736 % similar 2-Thiocytosine333-49-334 % similar Mercaptobenzimidazole583-39-134 % similar 4,5-Diphenyl-2-imidazolethiol2349-58-831 % similar 1,2,3,7,8,9-Hexahydro-2,8-dithioxo-6H-purin-6-one15986-32-030 % similar