Storage of Ecstacy

[burgerman]

I was wondering what is the length of time one can store ecstasy before it deteriorates ?

I've heard some people claim it only takes a week but surely this cant be true.

Somebody I know was thinking of storing it in a sealed small film cannister at room, temerature for about 3 weeks to a month before using, mainly because cynicism tells him if he waits for the last two weeks the third party source wont be able to procure any right before its needed.