Description_x000D_ General description_x000D_ Chemical structure: ß-lactam_x000D_ Application_x000D_ Phenoxymethylpenicillinic acid, also known as Penicillin V, is a narrow spectrum antibiotic used to treat mild to moderate infections caused by susceptible bacteria. It is a natural penicillin antibiotic that is administered orally. Penicillin V is a penicillin β-lactam antibiotic used in the treatment of bacterial infections caused by susceptible, usually gram-positive, organisms. It is commonly used in cell culture in combination with streptomcyin and other antibiotics. It is used to study penicillin-binding protein 2, molecular cloning of the Bacillus sphaericus penicillin V amidase gene, and gastrointestinal persistence and bile tolerance of Listeria monocytogenes._x000D_ Biochem/physiol Actions_x000D_ Phenoxymethylpenicillinic acid binds to specific penicillin-binding proteins (PBPs) and inhibits the synthesis of bacterial cell walls by preventing cell wall peptidoglycan chain cross-linking. This causes cell lysis, which is mediated by autolytic enzymes such as autolysins. Phenoxymethylpenicillnic acid may interfere with autolysin inhibitors._x000D_ Other Notes_x000D_ 10mu,100mu_x000D_ Keep container tightly closed in a dry and well-ventilated place.