Quote Originally Posted by Nick Zentena
No the reversal formula is:

I'd rather use metol because I already have it and I get the impression phenidone doesn't keep.

Phenidone keeps just fine, both in the powder form and in stock solutions where the powder is mixed either with isopropyl alcohol (at least 90%) or propylene glycol. It will keep indefinitely. My little jar of Phenidone powder that I use to mix the stock solutions has been around since Noah came off the ark, and it's still potent.