> Dear Protein experts,
>> I am currently running experiments requiring the use of PMSF. I have to
> prepare fresh
> solutions each time which as you may know takes up time and wastes a lot of
> reagent. Is there a way to prepare a solution which is stable in storage?
> are there other similar protease inhibitors? I am specifically interested in
> stability of PMSF in methanol, acetone and isopropanol over time. I have
> heard some colleagues store such solutions for up to a month, but I need
> confirmation from the scientific body.
We make concentrated stock in isopropanol. They store just fine.