Spectinomycin is an aminocyclitol antibiotic, which is distinct but related to aminoglycosides. It possesses bacteriostatic properties through inhibition of bacterial protein synthesis. Spectinomycin is commonly employed as a bacterial selection agent for bacteria with spectinomycin resistance gene, plasmid maintenance, plant biology, and synthetic biology workflows. This 50 mg/mL solution is a convenient, sterile-filtered stock solution, allowing easy dilution to desired final concentration.