27652-34-2 6-Mercaptopurine ribonucleoside triphosphate 6-Thioinosine-5'-triphosphate 9-beta-D-Ribofuranosyl-9H-purine-6(1H)-thione 5'-tetrahydrogen triphosphate 9H-Purine-6(1H)-thione, 9-beta-D-ribofuranosyl-, 5'-tetrahydrogen triphosphate Inosine 5'-(tetrahydrogen triphosphate), 6-thio- NSC 169530