Neomycin C Sulfate, EvoPure® is the highly purified sulfate salt of Neomycin C, the stereoisomer to Neomycin B. Despite its similarity to Neomycin B, Neomycin C is thought to have ~ 35% of its biological activity. Highly pure Neomycin compounds can be used in cell culture, upstream biopharma, and cancer research.