Buy Framycetin Sulfate (Neomycin B Sulfate) for your research needs. This white to off-white solid is highly soluble in water and has a melting point above 160°C (dec.). Store hygroscopically at -20°C under inert atmosphere. CAS: 4146-30-9. Ideal for in vitro studies. Water solubility: 250 mg/mL.