The average contents (±SD) of kaurenoic acid in the Araliae Continentalis Radix extract powder were estimated as 1.147±0.008 mg in 1.0054 g‚ usual dose of Araliae Continentalis Radix. Quantification of kaurenoic acid UPLC–MS/MS has been emerging as a powerful analytical technique for the determination of analyte in biological samples to improve sensitivity and selectivity. Herein‚ we developed a simple‚ selective‚ and sensitive bioanalytical UPLC-MS/MS method for the quantification of kaurenoic
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and ester formed. Hypothesis For test tube A I hypothesized that the final ester would be 2-methylpropyl formate. For test tube B I hypothesized the final ester would be octyl acetate. For test tube C I hypothesized it would be methyl salicylate. For test tube D I hypothesized it would be isopentyl acetate. Materials and Methods Apparatus 4 test tubes Test tube rack Graduated cylinder (10 mL) 150 mL beaker 250 mL beakers (2) Hot plate Thermometer Safety glasses Beaker tongs
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CHAPTER ONE 1.0 INTRODUCTION This report is a practical experience acquired by me in the course of my industrial training at Druckfarben Nigeria Limited (DFN) under the student industrial work experience scheme (SWIES). In the earlier stage of science and technology education in Nigeria‚ students were from their respective institutions without any technical knowledge or working experience. It was in this view that students undergoing science and technology related courses were mandated in different
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Introduction: Dealing with chemicals is an essential part of a chemical engineer’s job. It is therefore crucial to be able to accurately identify the composition of a chemical to be able to work with it. Indeed‚ different species have different physical and chemical properties which dictate their uses and applications. Furthermore‚ this kind of analysis is important in quality control since the detection of unwanted chemicals may lead to the rejection of a product for example. In addition to qualitative
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Mechanism: Side Reaction: Experimental: Table of Chemicals: Cyclopentadiene Maleic Anhydride Ethyl Acetate Hexane 66.10 g/mol 98.06 g/mol 88.11 g/mol 86.18 g/mol MP: -90º C BP: 39-43º C MP: 52.8º C BP: 202º C MP: -83.6º C BP: 77.1º C MP: -96--94º C BP: 68-69º C Cyclopenta-1‚3-diene Furan-2‚5-diene Ethyl Acetate Hexane Results: The crystals obtained through the Diels-Alder reaction were not plate-like‚ as were expected. We
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rotundus was evaluated for its hepatoprotective activity in rats by inducing liver damage with carbon tetrachloride. The ethyl acetate extract which was administered orally at a dose of 100 mg/kg exhibited significant protective effect by lowering serum levels of the liver enzymes such as alanine aminotransferase (ALT or SGPT)‚ aspartate aminotransferase (AST or SGOT)‚ alkaline
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and HNO3 the chloride ion solutions are used because silver nitrate is insoluble in HNO3. During the acetate anion test we had a positive result for solution D that proved the presence of the acetate ion. This reaction was from one drop of concentrated sulfuric acid and 1ml of ethanol and then required heating to excite the solution. Since ethyl acetate was produced we knew D contained the acetate anion‚ the fruity aroma produced after the solution was heated to release a gas proved this. This newly
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243a Matt Judd‚ Sec. 25 Date Performed: 10/15/03 Abstract: The objective of this experiment is to efficiently perform a fischer esterification of 1-Hexanol to form water and hexyl acetate‚ and to confirm the esterification with a nuclear magnetic resonance (NMR) spectroscopy. It was found that 0.3963 grams hexyl acetate was formed with a percent yield of 33.2%. The product was confirmed using NMR‚ IR‚ and boiling point confirmation. Backround: A Fischer Esterification is the formation of an ester
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it comparison with literature though Melting point‚ TLC‚ IR‚ 1H and 13C NMR Abstract: The synthesis of the product: β-D-glucose pentaacetate is done though the acetylation using acetic anhydride with D-glucose with the help of sodium acetate. The recrystallization of the product is done though a polar solvent like water. The Result of this experiment has a percentage yield of 61% and analytical methods that are to detect the products are 1H NMR‚ 13 C NMR‚ COSY‚ FTIR (IR)‚ Thin Layer Chromatography
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Jacobsen’s Method of Epoxidation of an Alkene | | Abstract Various types of reactions were completed to first create and then use Jacobsen’s catalyst in the asymmetric epoxidation of an unknown alkene with bleach in the laboratory. The chiral epoxide synthesized was then characterized with GC/MS and NMR. With this information the unknown alkene was able to be identified as 4-chlorostyrene. Introduction Organisms have evolved with mechanisms that use specific enantiomers of molecules
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