Synonyms: 6-Mercaptopurinum;6-Mercaptopurine, >99%;NSC-755;Mercaleukin;Purine-6-thiol, monohydrate;6-mercapto-;9H-Purin-6-yl hydrosulfide;6-Thioxopurine;U-4748;Puri-Nethol;1,7-Dihydro-6H-purine-6-thione;6-Thiopurine;6H-Purine-6-thione, 1,7-dihydro-;7-Mercapto-1,3,4,6-tetrazaindene;Hypoxanthine, thio-;6-Purinethiol;Mercaleukim;7H-purine-6-thiol;