Lomefloxacin hydrochloride (Standard) is the standard substance of Lomefloxacin hydrochloride, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Lomefloxacin hydrochloride (Okacyn) inhibits DNA gyrase, a type II topoisomerase involved in the induction or relaxation of supercoiling during DNA replication. This inhibition leads to a decrease in DNA synthesis during bacterial replication, resulting in cell growth inhibition and eventually cell lysis. Lomefloxacin Hydrochloride is the hydrochloride salt form of lomefloxacin, a synthetic broad-spectrum fluoroquinolone with antibacterial activity.