Synthesis and Purification of Acetylsalicylic Acid (ASA or Aspirin) Background Salicylic acid is a phenol as well as a carboxylic acid. It can therefore undergo two different types of esterification reactions‚ creating an ester either with the hydroxyl or with the acid. In the presence of acetic anhydride‚ acetylsalicylic acid (aspirin or ASA) is formed. Correspondingly‚ an excess of methanol will form methyl salicylate‚ which is also an analgesic. In this experiment‚ we shall use
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to build relations with him. Although Fischer brought Boukreev to be one of his guides‚ they would continuously argue amongst one another because Boukreev once again would climb far too ahead of the other climbers and Fischer‚ already ahead of the rest of the climbers‚ would have to help the stragglers. Each time Boukreev would disappear‚ it would only wear Fischer down‚ physically and mentally‚ eventually leading to a decrease in health. Boukreev told Fischer that if the climbers couldn’t climb without
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48ppm and 125.89ppm for PPAs and PPPs extracts of Paris polyphylla respectively. Thus‚ effect of petroleum soluble extract was found to be more lethal than other extracts. Key words: Fractionation‚ Phytochemical Screening‚ Antimicrobial activity‚ TLC‚ Brine Shrimp Lethality Assay. Introduction Natural product is a chemical substance found in nature
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PRACTICAL REPORT ON THE ISOLATION AND IDENTIFICATION OF CODEINE AND PARACETAMOLPRACTICAL REPORT ON THE ISOLATION AND IDENTIFICATION OF CODEINE AND PARACETAMOL AIM: To extract codeine and paracetamol from its tablet by solvent extraction and tentatively identify in comparison to standards using Thin Layer Chromatography. INTRODUCTION: Codeine or methyl morphine‚ an alkaloid‚ was first isolated in 1832 from raw opium. It concentration ranges from 0.2% to 0.8%. Mostly used for its analgesic‚
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Title of Experiment Extraction of Spinach Date that the Experiment was Performed This experiment was performed on Wednesday‚ September 17th‚ 2014 at 2:45 pm in the St Ignatius Science Center Laboratory 323. Partners Names Taylor Jackson and Matt D’Angelo. Taylor‚ Matt‚ and I shared the same data. Purpose/Goals/Objectives The purpose of this experiment was for each student to use column chromatography to separate plant pigments from spinach leaves. Some goals and objectives were to
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daughters. Jill Duggar-Dillard and Jessa Duggar-Seewald have been filming a new special for TLC compete with a look at their lives after news broke that they were two of five children allegedly molested by their brother‚ Josh Duggar. According to StarPulse‚ the Duggar family might have finished up the filming‚ but their family appears to be a negative property as 600 companies have declined to advertise during the TLC specials. Frankly‚ this isn’t surprising. Former fans who have fetl duped by the reality
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the wrong spot was chosen. If the RF values were used to determined which spot to choose‚ results may yield a smaller presence of pure naphthyl ether and a larger presence of dichloromethane in the IR spectrum. The spot that is most visible on the TLC plate is the solution that needs to be chosen. For this lab‚ the forth sample was chosen because the spot showed up the most under the UV light. An IR spectrum was obtained for this sample‚ and peaks for dichloromethane and 2-naphthol were signaled
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Jillian Brown IDIS 302 Professor Covin 20 September 2014 Case Study #1 “Antoine Fischer” is a movie about a young man who grew up with the struggles of never having a place to call home. He was passed from foster home to foster home and ending up in an abusive home that traumatized his childhood. Antoine Fischer grew up angry and mad at the world. He went into the army as a troubled young man who was angry at his alcoholic and drug addicted mother for giving him up and leaving him to basically
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Purpose: The purpose of this experiment was to identify one ketone with Thin Layer Chromatography and one using NMR spectrometry. We will do this by making 2‚ 4 a DNPH derivative and checking the melting points. Theory: By Using specific methods of compounds detection‚ we can match an unknown compound with a known compound because similar compounds will display similar characteristics. In this experiment‚ identifications of the unknown ketone was accomplished using thin layer chromatography
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information (Petersen‚ 2007). The talking and listening process is complicated. Petersen explains each communication process of listening and talking individually to better understand. In this section he introduces the Talker-Listener Card (TLC). The TLC allows the person talking or listening to have their time to so do without interruption in order to facilitate a open dialogue (Petersen‚ 2007). The talker is either most
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