Stability of nitrostyrenes?

[KidCurry]

If someone would make for example 3,4,5-TMNS, is it stable enough to be stored in a airtight container under roomtemp for 3-4 weeks? (Sorry, but search-function is not working as we all know. )

[Bandil]

If you have recrystallized and purified your nitrostyrene properly, it is no problem storing it for longer periods of time.

[KidCurry]

Thank you very much.
Would one recrystallisation from methanol be enough? Or should someone do it twice? The method of preparation would be condensation of 3,4,5-TMBA with nitromethane (in excess, as solvent too) and ammonium acetate? If my memory serves me well I think this method will produce a not so very clean product?