» Sisomicin Sulfate Injection is a sterile solution of Sisomicin Sulfate in Water for Injection. It contains the equivalent of not less than 90.0 percent and not more than 120.0 percent of the labeled amount of sisomicin (C₁₉H₃₇N₅O₇). It may contain one or more suitable buffers, chelating agents, and preservatives.