15635-25-3 6H-Purine-6-thione, 1,7-dihydro-, Mercury complex Mercury, bis(1,7-dihydro-6H-purine-6-thionato-N7,S6)-, (T-4)- Mercury, bis(1,9-dihydro-6H-purine-6-thionato-N7,S6)-, (T-4)- NSC68294