Also commonly referred to by docs and pharmacists as purinethol or simply and easy to say 6-MP. 6-mercaptopurine has the CAS Registry Number 50-44-2. The CA name is: 1,7-dihydro-6H-purine-6-thione. Trade names include Leukerin, Mercaleukin, Puri-Nethol, Purinethol.
My bum is broken....there's a big crack down the middle of it! LOL :)