2-Thioxanthine2487-40-3100 % similar 3,9-Dihydro-1H-purine-2,6-dithione5437-25-263 % similar Xanthine69-89-663 % similar Hypoxanthine68-94-052 % similar 1,2,3,7,8,9-Hexahydro-2,8-dithioxo-6H-purin-6-one15986-32-051 % similar 6-Thioxanthine2002-59-750 % similar N2-Acetylguanine19962-37-949 % similar Guanine73-40-541 % similar 6-Mercaptopurine50-44-239 % similar Guanine hydrochloride635-39-238 % similar 2-Thiothymine636-26-038 % similar 3-Methylxanthine1076-22-837 % similar 1-Methylxanthine6136-37-437 % similar 2-Mercapto-4(3H)-quinazolinone13906-09-737 % similar 6-Mercaptopurine monohydrate6112-76-136 % similar 4,5-Diamino-6-hydroxy-2-mercaptopyrimidine1004-76-835 % similar Pterin2236-60-435 % similar Guanine sulfate10333-92-334 % similar 6-Methoxy-9H-purine1074-89-133 % similar 6-Aza-2-thiothymine615-76-932 % similar