Mercurochrome is 2% aqueous merbromin solution, used as an antiseptic with a wide range of activity against Gram-positive and Gram-negative bacteria and other organisms. In 1919, the surgeon and urologist Dr. Hugh Young (with associates) at Johns Hopkins University discovered the antiseptic qualities of mercurochrome. The pharmaceutical company of Hynson, Wetscott and Dunning Inc. developed mercurochrome into an everyday antiseptic.