Name Period Date The Synthesis of Aspirin Background Pharmaceutical research labs perform chemical reactions between organic molecules that contain mostly carbon. Since the atoms in organic molecules tend to be nonmetals‚ then the bonds that hold them together are covalent bonds. Only a few elements on the periodic table are nonmetals: C‚ N‚ O‚ S‚ Cl‚ and F. This small number of elements can be bonded together in different quantities‚ bonding types (single‚ double‚ triple bonds)‚ and structural
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ASSESSMENT OF PRIMARY HEMOSTASIS 1.BLEEDING TIME Bleeding time is used to measure the duration of bleeding after a measured skin incision. Bleeding time may be measured by one of three methods: template‚ Ivy‚ or Duke. The template method is the most commonly used and the most accurate because the incision size is standardized. Bleeding time depends on the elasticity of the blood vessel wall and on the number and functional capacity of platelets. Although this test is usually performed on
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sakshieducation.com b) Non - narcotic analgesics: These drugs are analgesics but they have no addictive properties. Their analgesic use is limited to mild aches and pains like backache and headache. Ex: Aspirin‚ Ibuprofen etc. Aspirin: Chemically aspirin is ortho acetyl salicylic acid. Preparation: Acetylation of salicylic acid with acetic
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Anhydride Figure 11.3. The balanced chemical reaction of the formation of aspirin. Because the reaction is slow in pure acetic anhydride‚ the catalyst‚ commonly strong acids like phosphoric acid was used for the reaction. According to Le Chatelier’s principle‚ the presence of excess acetic anhydride forces the equilibrium towards the desired product‚ which in this case is the aspirin. In addition to this‚ the catalysts were also used to ensure that side reactions‚ which may
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being given our own Salicylic acid (SA) prepared for us instead of having to used wintergreen to make it and recrystallize it. In addition‚ we skipped the qualitative test of our purity for SA and Aspirin (ASA). The first part of this experiment is the preparation of ASA from SA were‚ we prepared our aspirin from the collected salicylic acid. A screw-capped vial was weighed empty to 29.7416 grams and filled with SA. The mass recorded of SA was 1.3995 grams of SA and it was weighed and transferred to
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the test tube by displacing the water. After that‚ bring out the test tube and ignite it. For Preparation of Iodoform‚ a Halogen Derivative (or Alkyl Halide)‚ first place two milliliter of ethyl in a small beaker and add few crystals of iodine and stir to dissolve. Then‚ add 10% sodium hydroxide solution and stir it until its goes from brown to yellow. Record the observation on the data sheet. For preparation of ethyl acetate‚ first place 3 mL of glacial acetic acid in a test tube and describe the odor
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‚ R.ABB-L-KAREEM and M.A.ABB-ALLA. 2002. Postharvest Diseases Control: Preventive Effect of Chitosan and Bioagents Against Green and Gray Moulds of Apple Fruits. Egypt. J.Phytopathol.‚ 30: 99-113. 5) FIDA 6) GLEASON‚ M. 1999. Sick Plants take aspirin. http://www.extension.iastate.edu/newsrel/1999/jan99/jan9901.htm 7) GORLACH‚ J.‚ S 8) HERANO‚ S.‚ C. ITAKURA‚ H. SEINO‚ Y. AKIYAMA‚I. NOTATA‚ N. KANBARA and N. KAWAKAMI. (1990). Chitosan as an Ingredient for Domestic Animal Feeds. J. Agric. Food
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the components of a simulated pharmaceutical preparation‚ Panacetin‚ and identifying the unknown component of the mixture through extraction and separation methods. 2. To learn how to purify by recrystallization‚ how to dry them and how to obtain a melting point. PRECAUTION: ACETANILIDE AND PHENACETIN ARE EYE AND SKIN IRRITANTS. Minimize contact with your unknown compound. THEORY: In this experiment‚ Panacetin‚ a pharmaceutical preparation will be separated from its components by making
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current experiment I will asses the pharmaceutical preparation of Panacetin‚ by using it ’s solubility along with other organic molecules. We know that Panacetin is made up of sucrose‚ aspirin and some other unknown substance. We know the substance has to be Phenacetin or Acetanilide. To help solidify our reasoning‚ we need a % recovery of 8-12% sucrose‚ 35-45% aspirin and 45-55% unknown. Sucrose for example is insoluble in dichloromethane‚ while aspirin is soluble in CH2Cl2‚ but not in H2O. The organic
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The purpose of this experiment is to investigate the composition of a simulated pharmaceutical preparation Panacetin‚ a proposed type of pain-killer. Panacetin is typically made up of sucrose‚ aspirin‚ and acetaminophen‚ but the third component in this experiment is unknown. The unknown component is suspected to be a chemical relative of acetaminophen‚ either acetanilide or phenacetin. Using techniques such as extraction‚ evaporation‚ and filtration‚ the three components will be isolated based on
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