Antibiotic. Inhibits protein synthesis (elongation) by interfering with peptidyl tRNA translocation. Effective against Gram-negative and Gram-positive bacteria (Gonnococcus only). Mutation in rpsE (the gene for ribosomal protein S5) prevents binding of spectinomycin. Product SpecificationAlternative Name: U-18409E MW: 430.4 CAS: 64058-48-6 Purity: 98% Appearance: White solid. Hazard: IRRITANT. Long Term Storage: -20°C