Phenidone Solution

A phenidone solution can be made by dissolving 1 g of phenidone in 100 ml of propylene glycol. Such a solution is easier to dose in smaller quantities than weighing phenidone. For example 0.1 g of phenidone would correspond to 10 ml of such a solution.

The keeping life of phenidone in propylene glycol is a couple of years (3 years?).

A lesser alternative is to dissolve phenidone in pure isopropyl alcohol; keeping properties are worse (6 months?).