stability of doxycycline - (Sep/28/2007 )

Hi all,

I am using doxycycline to induce expression and prepared the solution with water and stored it at -20. I dont know if it it right to store it like this and how long it can be kept active. Anyone can tell me about that? Thanks!

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see this article :
Doxycycline : Stability in solutions

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Thanks for your reply. But it seems not to be a valid address. Could you correct it? Thank you!

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done;

and here is an other interesting :
Stability of minocycline, doxycycline, and tetracycline stored in agar plates and microdilution trays

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