» Dantrolene Sodium for Injection is a sterile, non-pyrogenic, lyophilized formulation containing Dantrolene Sodium, and one or more suitable buffering or sequestering agents. It contains not less than 90.0 percent and not more than 110.0 percent of the labeled amount of C₁₄H₉N₄NaO₅·3½H₂O.