Uses
A fast voltage-gated sodium channel blocker
Uses
Na+ channel blocker.
Uses
used in Local anesthesia and heart rhythm disorders.
Definition
ChEBI: The monohydrate form of lidocaine hydrochloride.
Chemical Properties
Linocaine hydrochloride is white or almost white, crystalline powder.
Application
Anesthetic (local); antiarrhythmic (class IB). Long-acting, membrane stabilizing agent against ventricular arrhythmia. Originally developed as a local anesthetic.
Brand name
Alpha caine Hydrochloride (Carlisle); Anestacon (Polymedica);
Laryng-O-Jet (International Medication); Lidocaton (Phar maton); Lidopen (Meridian); Xylocaine (Abraxis); Xylo caine (AstraZeneca); Xylocaine (Dentsply).
General Description
Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.
Biological Activity
Na+ channel blocker; class IB antiarrhythmic th at is rapidly absorbed after parenteral administration
Synthesis
A method for preparing Lidocaine hydrochloride is described as follows. The method comprises the following steps: by taking 2,6-xylenol as a raw material, Pd/C as a primary catalyst and 2,6-dimethylcyclohexanone as a promoter, performing liquid phase amination with ammonia water at high temperature, thereby obtaining a midbody 2,6-dimethylaniline; enabling sodium methylate, 2,6-dimethylaniline and N,N-lignocaine methyl acetate as raw materials to react at 90-95 DEGC, distilling while reaction is performed to remove methanol till no methanol can be evaporated out, continuously reacting for 30 minutes, cooling to the room temperature, adding dichloroethane, washing with water, and leaving to stand to layer, thereby obtaining an organic layer, namely, a lidocaine based dichloroethane solution; further adding hydrochloric acid into the lidocaine based dichloroethane solution, adjusting the pH value to be 3.5-4 by using hydrogen chloride, adding activated carbon to reflux for 20-40 minutes, filtering, concentrating the filtrate, cooling, crystallizing, and dying, thereby obtaining Lidocaine hydrochloride.
Mode of action
Lidocaine Hydrochloride is the hydrochloride salt form of lidocaine, an aminoethylamide and a prototypical member of the amide class anesthetics. Lidocaine interacts with voltage-gated Na+ channels in the nerve cell membrane and blocks the transient increase in permeability of excitable membranes to Na+. This prevents the generation and conduction of nerve impulses and produces a reversible loss of sensation. Lidocaine hydrochloride also exhibits class IB antiarrhythmic effects. The agent decreases the flow of sodium ions into myocardial tissue, especially on the Purkinje network, during phase 0 of the action potential, thereby decreasing depolarization, automaticity and excitability.
