15635-23-1 6H-Purine-6-thione, 1,7-dihydro-, cobalt complex Cobalt, bis(1,7-dihydro-6H-pruine-6-thionato-N7,S6)- Cobalt, bis(1,9-dihydro-6H-purine-6-thionato-N7,S6)- NSC55478 Purine-6-thiol, cobalt(II) deriv.