6-Aza-2-thiothymine615-76-9100 % similar 6-Azathymine932-53-656 % similar 2-Thiothymine636-26-044 % similar 4,5-Diamino-6-hydroxy-2-mercaptopyrimidine1004-76-836 % similar 5,6-Dimethyluracil26305-13-534 % similar 2-Mercapto-4(3H)-quinazolinone13906-09-734 % similar 1,2,3,7,8,9-Hexahydro-2,8-dithioxo-6H-purin-6-one15986-32-033 % similar 2-Thioxanthine2487-40-332 % similar Methylthiouracil56-04-232 % similar Ethyl 1,2,3,4-tetrahydro-4-oxo-2-thioxo-5-pyrimidinecarboxylate38026-46-932 % similar 4,6-Dimethyl-2-mercaptopyrimidine22325-27-530 % similar