Tetracaine powder and articaine are both important local anesthetics used in the medical and dental fields. As a tetracaine powder supplier, I have in-depth knowledge of these two substances and would like to share the differences between them.
Tetracaine Powder
English Name: Tetracaine powder
Product Code: BM-2-5-008
CAS Number: 94-24-6
Molecular formula: C15H24N2O2
Molecular weight: 264.36
EINECS Number: 202-316-6
Enterprise standard: HPLC>98.0%, HNMR
Manufacturer: BLOOM TECH Xi'an Factory
Technology service: R&D Dept.-1
We provide tetracaine powder, please refer to the following website for detailed specifications and product information.
Chemical Structure
Tetracaine, also known as amethocaine, has a chemical formula of C₁₅H₂₄N₂O₂. It belongs to the ester-type local anesthetics. The structure contains an ester linkage, which is relatively unstable in aqueous solutions and can be hydrolyzed by esterases. This characteristic affects its stability and duration of action to some extent.
Articaine, with the chemical formula C₁₃H₂₀N₂O₃S, is an amide-type local anesthetic. The amide linkage in its structure is more stable compared to the ester linkage in tetracaine. Amide-type anesthetics are generally more resistant to hydrolysis, which contributes to their longer-lasting effects and better stability in the body.
Pharmacological Properties
Onset of Action
Tetracaine has a relatively slow onset of action. It usually takes a few minutes for the anesthetic effect to start after administration. This is because it needs to be absorbed and distributed in the tissues before it can effectively block nerve impulses. For example, in dental procedures, when using tetracaine for topical anesthesia, patients may need to wait for 2-5 minutes before experiencing significant numbness.
Articaine, on the other hand, has a rapid onset of action. It can start working within 1-2 minutes after injection. This quick-acting property makes it very suitable for situations where immediate anesthesia is required, such as in emergency dental treatments or minor surgical procedures.
Duration of Action
The duration of action of tetracaine is relatively long. After a single dose, the anesthetic effect can last for about 60-90 minutes. This long-lasting property makes it useful for procedures that require extended periods of anesthesia, like some major dental surgeries.
Articaine has a shorter but still sufficient duration of action. Typically, the anesthetic effect lasts for about 45-60 minutes. Although it is shorter than that of tetracaine, it is still adequate for most common dental and minor surgical procedures.
Potency
Tetracaine is a highly potent local anesthetic. It can effectively block nerve conduction even at relatively low concentrations. This high potency allows for the use of smaller amounts of the drug to achieve the desired anesthetic effect.
Articaine is also potent, but its potency is slightly lower compared to tetracaine. However, its rapid onset and good tissue penetration compensate for this relatively lower potency in many clinical applications.
Clinical Applications
Dental Use
In dentistry, tetracaine is often used for topical anesthesia. It can be applied to the oral mucosa before dental injections to reduce the pain associated with needle insertion. For example, a dentist may apply a tetracaine-based topical gel on the gums before injecting a local anesthetic.
Articaine is widely used for infiltration and nerve block anesthesia in dental procedures. It can provide effective anesthesia for tooth extractions, fillings, and root canal treatments. Its rapid onset and good tissue penetration make it a popular choice among dentists.
Other Medical Uses
Tetracaine is also used in ophthalmology for topical anesthesia during eye examinations and minor eye surgeries. It can be applied as eye drops to numb the surface of the eye.
Articaine has limited use outside of dentistry. However, it may be used in some minor surgical procedures in the head and neck region where a rapid-acting and relatively short-lasting anesthetic is required.
Safety and Side Effects
Allergic Reactions
Ester-type anesthetics like tetracaine have a higher risk of allergic reactions compared to amide-type anesthetics such as articaine. This is because the breakdown products of esters can sometimes trigger an immune response in sensitive individuals. Allergic reactions to tetracaine can range from mild skin rashes to severe anaphylactic shock.
Articaine, being an amide-type anesthetic, has a lower incidence of allergic reactions. However, like any drug, it can still cause allergic reactions in some patients, although these are relatively rare.
Systemic Toxicity
Both tetracaine and articaine can cause systemic toxicity if they are absorbed into the bloodstream in large amounts. Tetracaine, due to its high potency, has a relatively narrow margin of safety. Excessive doses can lead to central nervous system and cardiovascular system toxicity, such as seizures, arrhythmias, and hypotension.
Articaine has a better safety profile in terms of systemic toxicity. Its lower potency and better tissue distribution reduce the risk of systemic toxic effects. However, proper dosing and careful administration are still necessary to avoid any potential adverse effects.
Availability and Pricing
As a tetracaine powder supplier, I can provide high-quality tetracaine powder for various research and medical applications. Tetracaine is generally more widely available in the market compared to articaine. This is partly due to its longer history of use and more established manufacturing processes.
In terms of pricing, tetracaine powder is usually more cost-effective compared to articaine. This makes it a popular choice for institutions and researchers on a budget. However, the final price may vary depending on factors such as purity, quantity, and supplier.
If you are interested in related chemical products, you can also check out Bilirubin Powder CAS 635-65-4, Dextran Powder CAS 9004-54-0, and N-(2-Acetamido)iminodiacetic Acid CAS 26239-55-4.
Our products
In conclusion, tetracaine powder and articaine have distinct differences in chemical structure, pharmacological properties, clinical applications, safety, and pricing. As a tetracaine powder supplier, I am committed to providing high-quality products to meet the needs of our customers. If you have any questions or are interested in purchasing tetracaine powder for your research or medical applications, please feel free to contact us for further discussion.
References
- Stoelting RK, Hillier SC. Pharmacology and Physiology in Anesthetic Practice. Lippincott Williams & Wilkins; 2018.
- Malamed SF. Local Anesthesia for the Dental Practitioner. Elsevier; 2019.