Lidocaine Hydrochloride CAS 6108-05-0 | Pharmaceutical Chemical
Lidocaine Hydrochloride is a widely used amide-type local anesthetic with CAS Number 6108-05-0. It is a white crystalline powder that is highly soluble in water and is characterized by rapid onset of action, strong penetration, long-lasting effects, and a high safety profile.
In the pharmaceutical field, lidocaine hydrochloride is primarily used as a local anesthetic and is suitable for surface anesthesia, infiltration anesthesia, nerve block anesthesia, and epidural anesthesia. It is also a commonly used Class Ib antiarrhythmic drug in clinical practice, used to treat acute cardiac events such as ventricular tachycardia and ventricular fibrillation.
As a pharmaceutical raw material, this product strictly complies with pharmacopoeial standards (such as USP, EP, and CP), features high purity and good stability, and is widely used in the production of various dosage forms, including injectables, ointments, patches, and gels. Its reliable anesthetic efficacy and controllable safety profile make it one of the essential medicines in clinical practice.
1. Local Anesthesia and Analgesia
This is the most widely recognized use of lidocaine hydrochloride. It works by stabilizing nerve cell membranes, blocking the generation and transmission of nerve impulses, and thereby reversibly blocking pain perception.
Injection Anesthesia: This is its core application. Lidocaine hydrochloride injection is widely used in adult and pediatric patients to provide local or regional anesthesia or analgesia. It is suitable for surgical procedures, dental and oral surgeries, diagnostic and therapeutic procedures, and obstetric surgeries. Common methods of injection anesthesia include:
Infiltration Anesthesia: Direct injection into the subcutaneous or deep tissues of the surgical site, used for minor surgical procedures.
Nerve block anesthesia: Injected around nerve trunks or plexuses to block nerve signals in specific areas, such as brachial plexus block (used for upper limb surgery) and intercostal nerve block.
Intraspinal anesthesia: Administered via epidural or sacral canal injection, used for abdominal, pelvic, or lower extremity surgeries, as well as labor analgesia.
Surface Anesthesia and Mucosal Applications:
When endoscopic examinations (such as gastroscopy) are required, lidocaine solution or spray is used to anesthetize the surface of the throat to alleviate discomfort.
For minor skin and mucosal discomfort, such as hemorrhoids, anal fissures, itchy skin, minor burns, and abrasions, 3% or 2.5% lidocaine gel or ointment may be applied topically to relieve pain and discomfort.
In ophthalmology, low-concentration lidocaine solutions may be used for surface anesthesia prior to eye examinations and surgeries.
2. Antiarrhythmic
In addition to its anesthetic effects, lidocaine hydrochloride is also an important Class Ib antiarrhythmic drug. At therapeutic doses, it suppresses the automaticity of cardiac muscle cells and raises the threshold for ventricular fibrillation; it is primarily used for ventricular arrhythmias in acute situations.
Core Indications: These include ventricular premature beats, ventricular tachycardia, and ventricular fibrillation caused by acute myocardial infarction, cardiac surgery, cardiac catheterization, and digitalis toxicity. During cardiopulmonary resuscitation, it is also used to enhance the effectiveness of electrical defibrillation.
Route of Administration: Due to low oral bioavailability, it is typically administered intravenously in clinical practice to ensure rapid onset of action and control critical conditions.
In summary, lidocaine hydrochloride is not only an indispensable local anesthetic in operating rooms and dental clinics but also a powerful tool for managing malignant arrhythmias in the emergency department; its applications span a wide range of scenarios, from routine medical procedures to the treatment of critical and life-threatening conditions.
It is important to note that different formulations (such as solutions, gels, and pastes) and concentrations of lidocaine hydrochloride have different indications, and there are strict dosage restrictions; it must be used under the guidance of a physician or pharmacist.