Oxacillin Sodium Salt Monohydrate, 1G, is a laboratory-grade antibiotic used primarily for antimicrobial testing and research applications. As a penicillin-class antibiotic, it is effective against a variety of Gram-positive bacteria, particularly Staphylococcus species. Oxacillin works by inhibiting bacterial cell wall synthesis, which leads to cell death. This product is widely used in laboratory settings for studying bacterial resistance, particularly for assessing methicillin resistance in staphylococci. The 1g quantity is ideal for smaller scale studies and testing applications where precise antibiotic measurement is needed for microbial assays, including disk diffusion and dilution testing methods.