Neoarsphenamine

Neosalvarsan (compound 914) is a salt derivative of Salvarsan and is water soluble, which showed reduced side effects .Later work showed that neither Salvarsan nor Neosalvarsan was the active pharmaceutical ingredient (API).

Treatment against syphilis.

Poison by intravenous and subcutaneous routes. When heated to decomposition it emits very toxic fumes of As, , NOx, Na2O,and SOx,. See also ARSENIC COMPOUNDS.