6-Dmap938-55-6100 % similar 6-Methoxy-9H-purine1074-89-149 % similar 6-Methylmercaptopurine50-66-849 % similar 6-Mercaptopurine50-44-248 % similar Hypoxanthine68-94-048 % similar 6-Hydrazinyl-9H-purine5404-86-446 % similar 6-Mercaptopurine monohydrate6112-76-144 % similar Purine120-73-034 % similar Azathioprine446-86-631 % similar 3,9-Dihydro-1H-purine-2,6-dithione5437-25-231 % similar Xanthine69-89-631 % similar