Linezolid N-Oxide-D3 is a labelled analogue of Linezolid N-oxide (L466530). Linezolid N-oxide is a derivative of Linezolid (L466500), an oxazolidinone antimicrobial that is used to treat infections against gram-positive bacteria, especially those that are drug-resistant (such as Vancomycin [HCl: V096500] resistant enterococci). Linezolid works by inhibiting bacterial protein synthesis.