If I were to try FX-37, I would (what else?) put the phenidone and hydroquinone in a separate solution with glycol as solvent so that the working solution would be x*A + y*B +C*H2O. Sooner or later, I would substitute ascorbic acid for the hydroquinone and use TEA or a mixture of TEA and glycol in place of the glycol.
Was not FX-39 the aborted venture into ascorbate? Or am I thinking of some other FX?