4988-64-1 5270-38-2 6H-Purine-6-thione, 1,9-dihydro-9-ribofuranosyl- (9CI) 9H-Purine-6(1H)-thione, 9-ribofuranosyl- 9H-Purine-6-thiol, 9-ribofuranosyl- Inosine, 6-thio- (9CI) MERCAPTOPURINE RIBOSIDE Mercaptopurine ribonucleoside Ribofuranoside, 9H-purine-6-thiol-9