I seem to remember seeing an acorbate form of Metol, using, I guess. ascorbic acid in place of sulfuric acid on its tail. I am thinking of adding just enough alkali to precipitate the base, then if I'm lucky I will be able to dissolve it again with ascorbic acid after decanting most of the sulfate. Why I would attempt such a thing, IDK. Too much time on my hands, I guess.