6-Mercaptopurine50-44-2100 % similar 6-Mercaptopurine monohydrate6112-76-188 % similar 3,9-Dihydro-1H-purine-2,6-dithione5437-25-255 % similar Hypoxanthine68-94-053 % similar 6-Thioxanthine2002-59-752 % similar 6-Hydrazinyl-9H-purine5404-86-450 % similar 6-Methoxy-9H-purine1074-89-148 % similar 6-Methylmercaptopurine50-66-848 % similar 6-Dmap938-55-648 % similar 2-Thioxanthine2487-40-339 % similar Thioguanine154-42-738 % similar Purine120-73-038 % similar Xanthine69-89-633 % similar Azathioprine446-86-631 % similar