3-Amino-5-mercapto-1,2,4-triazole16691-43-3100 % similar 2-Amino-1,3,5-triazine-4,6-dithiol2770-75-440 % similar 5-(Methylthio)-1H-1,2,4-triazol-3-amine45534-08-539 % similar 8-Mercaptoguanine28128-40-735 % similar 4,6-Diamino-2-mercaptopyrimidine1004-39-331 % similar 5-Aminotetrazole4418-61-531 % similar 2,6-Diamino-4(3H)-pyrimidinethione56-08-630 % similar