Labeled Dalfampridine. Dalfampridine is used in characterizing subtypes of potassium channel, and has also been used to manage some of the symptoms of multiple sclerosis, and is indicated for symptomatic improvement of walking in adults with several variations of the disease. Dalfampridine is a precursor to the drug Pinacidil.Form:White SOlidMelting Point:157-159°CSolubility:DMSO, Methanol