Benzocaine is a topical anesthetic commonly used to relieve pain or discomfort . There are many brands of benzocaine and it is the active ingredient in various over-the-counter analgesic ointments . Benzocaine is the ethyl ester of paraaminobenzoic acid and as an ester it can be classified by Fischer esterification. Fischer esterification reactions typically include a carboxylic acid and alcohol as well as a dehydrating agent . Since esterification reactions are slow‚ a catalyst is required. The
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help you answer this question. The molecular formula of citrate is C6H8O7. What is the molecular weight of this drug? A. 29.08 B. 192.08 C. 192 D. 29.01 9. _______ is a compound formed from combining a carboxylic acid and an alcohol. A. Ether B. Ester C. Aldehyde D. Ketone 10. How many additional electrons does carbon need in its outer shell to achieve the greatest stability as an atom? A. Two B. Three C. One D. Four 11. Amitriptyline (Elavil) is a/an A. anti-inflammatory. B. antidepressant. C
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taste)‚ it did not alleviate the gastric discomfort problems. [pic] salicylic acid sodium salicylate In 1893‚ Felix Hoffman Jr.‚ a chemist working for the Bayer Laboratories in Germany‚ discovered a practical route for synthesizing an ester derivative of salicylic acid‚ acetylsalicylic acid. [pic] AcetylSalicylic Acid
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column making sure it did not dry. The yellow band was collected in the first watch glass. Once all of the yellow band had eluted‚ the watch glasses were switched and when the heptane level reached the top of the sand‚ we switched to MTBE (methyl t-butyl ether). The MTBE was continued to be added to the column to elute the orange band. Both of the watch glasses were placed in a fume hood where the solvent was allowed to evaporate‚ afterwards‚ the watch glasses were weighed again. A developing
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REVIEW REVIEW Plant Signaling & Behavior 5:8‚ 1-6; August 2010; © 2010 Landes Bioscience Unraveling ferulate role in suberin and periderm biology by reverse genetics Olga Serra‚1 Mercè Figueras‚1 Rochus Franke‚2 Salome Prat3 and Marisa Molinas1‚* 1 This manuscript has been published online‚ prior to printing. Once the issue is complete and page numbers have been assigned‚ the citation will change accordingly. Laboratori del Suro; Departament de Biologia; Facultat de Ciències; Universitat
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FORM 4G ELECTROLYSIS WORKSHEET TERM 3 2010-2011 1.Figure 1 below is a diagram of the apparatus used in the electrolysis of fused sodium bromide. Figure 1 a)Write the formulae for the ions present in the fused sodium bromide. b)Write an ionic equation to represent the reaction taking place at the positive and negative electrodes. c)When the heat source was removed‚ the crucible cooled and the lamp went out. Explain why the lamp went out when the crucible cooled. d)At the end of the experiment
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Use of Personal Protective Equipment 1. Purpose It is a requirement of the School of Chemistry and the University that appropriate personal protective equipment (PPE) be employed to minimise risks which may be present within a laboratory or workplace. This guideline discusses the various basic types of which are available to laboratory workers‚ briefly outlining their use‚ application and maintenance. 2. Scope This procedure applies to all personnel working in the School of Chemistry laboratories
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Preparation of Synthetic Banana Oil Introduction: In this lab the synthesis‚ purification‚ and characterization of isoamyl acetate‚ or banana oil‚ was determined. The synthesis was completed by a reversible esterification reaction which required the heating of glacial acetic acid and isoamyl alcohol‚ combined with a sulfuric acid catalyst in hexane. In order to increase the efficiency of the reaction‚ LeChatelier’s Principle is utilized by removing water from the products. As a result‚ the reaction
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1. Aspartame 100 Saccharin 550 Sucrolose 600 Alitame 2000 Table Table 16.1: Artificial Sweeteners Aspartame is the most successful and widely used artificial sweetener. It is roughly 100 times as sweet as cane sugar. It is methyl ester of dipeptide formed from aspartic acid and phenylalanine. Use of aspartame is limited to cold foods and soft drinks because it is unstable at cooking temperature. Alitame is high potency sweetener‚ although it is more stable than aspartame‚ the control
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found in the toxicology report be accounted for by the known patient history? Ethanol‚ cotinine‚ lidocaine‚ altropine‚ cocaine‚ ethylbenzoylecgonine‚ benzoylecgonin‚ ecgonine methyl ester‚ metroprolol‚ and caffeine were found in the blood. Nicotine‚ cotinine‚ cocaine‚ ethylbenzoylecgonine‚ benzoylecgonin‚ ecgonine methyl ester‚ metroprolol‚ and caffeine were found in the urine. The mix of cocaine and alcohol can cause ethylbenzoylecgonine‚ which is damaging to the heart. The patient history could be reported
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