85-1541-83　Streptomycin Sulfate, 650-850U/mg 500g　CAS No:3810-74-0　S7975

特徴

• Streptomycin Sulfate is a broad spectrum antibiotic used in mammalian cell culture. It belongs to a group of drugs called aminoglycosides. Streptomycin inhibits prokaryote protein synthesis by binding to S12 protein of 30S ribosome. It prevents the transition from initiation complex to chain-elongating ribosome and causes miscoding. Thus, it prevents bacteria from manufacturing their cell walls.
• Molecular Weight:777.73
• Molecular Formula:C21H39N7O12•1.5 H2SO4
• Potency (Anhydrous):650-850u/mg
• Appearance:White to off-white powder
• Identification:Conforms to USP
• pH:4.5-7.0
• Loss on Drying:≤7%
• Sterility:Conforms to USP
• Streptomycin B:≤3%
• Sulfated Ash:≤1%
• Sulfate:18.0-21.5% (anhydrous)
• Endotoxin:≤0.25EU/mg
• Storage and Stability:May be stored at 4°C. Stable for 12 months after receipt. Reconstitute by adding sterile buffer. Aliquot and store at -20°C. Reconstituted product is stable for 3 days at 37°C; up to one month at 4°C; 6-12 months at -20°C. Further dilutions can be made in assay buffer.