Neomycin B Sulfate, EvoPure® is the highly purified sulfate salt of Neomycin B, which is the major component found in Neomycin. Neomycin B is ~90% more active than Neomycin A and ~65% more active than Neomycin C, its stereoisomer. Highly pure Neomycin compounds can be used in cell culture, upstream biopharma, and cancer research.