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benzocaine造句
1. Objective: To improve the preparation of benzocaine. 2. ANESTHETICS: Benzocaine, pramoxine, and antipyrine relieve pain and pruritus. 3. Benzocaine is synthesized from p-aminotoluene by microscale chemical experiment. The experiment process includes acylation, oxidation, hydrolyzation and esterification etc. 4. Methods: Benzocaine was synthesized from p - nitrobenzoic acid via two steps through esterifying and reduction. 5. Anesthetics in low doses, or local anesthetics such as benzocaine, are also analgesic in function. 6. IMPLICATIONS: Local anesthetic-related methemoglobinemia is a recurring problem and may lead to life-threatening events. The clinical use of benzocaine and prilocaine needs to be reassessed. 7. These creams contain high doses of local anesthetics including lidocaine , tetracaine , benzocaine, and prilocaine.