2-Mercapto-6-aminopurine 2-Mercaptoadenine 2-Thioadenine 2H-Purine-2-thione, 6-amino-1,3-dihydro- 3647-48-1 6-Amino-2-mercaptopurine 6-Aminopurine-2-thiol 85892-43-9 936-24-3 AI3-52236 Isoguanine, thio- NSC 52758 Purine-2-thiol, 6-amino-