https://www.thevespiary.org/rhodium/Rhodium/chemistry/brightstar.mdma.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/brightstar.mdma.html)
The ketone is unstable. It won't explode or anything, but if left to its own devises, it will rearrange. And then it will be useless. At room temp, it will rearrange in about a week - depending on where you live - if you keep it in the freezer - it can last months - FREEZER!
Answer your q?
Post 427740 (https://www.thevespiary.org/talk/index.php?topic=10109.msg42774000#msg42774000)
(mtnfrogger198: "Ketone Decomposition?", Newbee Forum)