2-(6-Mercaptopurinyl-9)-1,4-butanediol hydrochloride 70661-73-3 9-(1,4-Dihydroxy-2-butyl)-9H-purine-6-thiol hydrochloride 9H-Purine-6-thiol, 9-(1,4-dihydroxy-2-butyl)-, hydrochloride 9H-Purine-9-(2-butane-1,4-diol), 6-mercapto-, hydrochloride