Lidocaine-d10 hydrochloride（Cat No.:R006892）is a deuterium-labeled form of lidocaine hydrochloride, featuring ten deuterium atoms for enhanced detection and quantification in analytical research. As a local anesthetic and class 1B antiarrhythmic, it blocks voltage-gated sodium channels to inhibit nerve impulses and stabilize cardiac conduction. The hydrochloride salt improves solubility and stability for laboratory use. Lidocaine-d10 hydrochloride is primarily used in mass spectrometry-based pharmacokinetic and metabolic studies, serving as an internal standard to ensure accuracy. It maintains the biological activity of the parent drug, supporting precise drug monitoring and bioanalytical assay development.