3.1. Biochemical analysis of plant Due to the presence of bioactive compounds‚ medicinal plants have special properties of treatment of various chronic diseases. Lonicera quinquelocularis is used medicinally in the treatment of different diseases as “alternative medicine”. Due to the medicinal uses of the plant‚ it is very important to explore the biochemical composition of the plant. 3.1.1. Plant Collection Plant of Lonicera quinquelocularis was collected from the area Kakki of district Bannu‚ Khyber
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Compound 50‚ like its known analogue 3‚ involves an α‚β-unsaturated ketone‚ an acid-sensitive reactant‚ which prevents its direct synthesis in presence of protic solvents by refluxing. Despite of this characteristic‚ 50 was formed smoothly in 5 minutes by grinding chemistry‚ solely as E-isomer‚ without any evidence of decomposition after 1H and 13C MNR analysis. This synthetic approach provides easy access to such α‚β-unsaturated N-acylhydrazones‚ which are building blocks in the synthesis of nitrogen-containing
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Preparation of Standard Solutions and Use of a Spectrophotometer to Measure the Concentration of an Unknown Solution Introduction Concentration is the ratio of the quantity of solute to the quantity of the solvent or the quantity of solution. By knowing this‚ CO(NO3)2 *6H2O Purpose What is the percent transmittance of six different solutions of cobalt (II) nitrate hexahydrate using a spectrophotometer? Materials * Graduated cylinder (10 mL) * Graduated cylinder (25 mL) * pipet
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substrates were dried in an oven at 80°C for 10 min. The substrates were dipped in the prepared sols and then withdrawn at a constant dip-coating speed of 15 mm/min. After each deposition‚ all samples were preheated at 200°C for 10 min to remove the solvent and organic residuals.
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Preparation of template The surfactant modified alumina template was prepared by precipitation method previously reported in literature []. Typically‚ Precursor solution and surfactant solution were prepared by dissolving required amount of aluminium nitrate nonahydrate and sodium dodecyl sulfate in distilled water. Molar composition ratio of both the aluminium precursor and surfactant solutions was taken as 4:1. Mixture was stirred for 15 minutes at room temperature then precipitation was carried
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compare it with the literature melting point and the melting point of the impure starting material. Overall‚ based on these results‚ how successful was your crystallization and why? Post-lab Questions: 1. For the following pairs of solutes and solvent‚ predict whether the solute would be soluble or insoluble. It may be helpful to look up some of the chemical structures. (3pts) a. Malic acid in water b. Naphthalene in water c. Amphetamine in ethyl alcohol d. Aspirin in water e. Succinic
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INTRODUCTION Background of the Study Familiar household uses of acetone are as the active ingredient in nail polish removers and as paint thinner. Acetone can also be used for medical and cosmetic uses‚ such as applying acetone with alcohol for acne treatments to peel dry skin. It can also remove residues from glass and porcelain and it can also remove super glue from the skin. Perhaps‚ acetone is very useful in our everyday lives. Acetone is also known to remove ball pen
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CT-DNA was sufficiently free from protein contamination where CT‐DNA solution gave a ratio of UV absorption at 260/280 nm equal to 1.92. The stock solution was stored at 4 0C and used within for 4 days. The investigated complexes were dissolved in DMF solvent. Electronic spectra experiments were performed by keeping investigated complexes concentrations constant while changing the CT-DNA concentration in the interaction medium. The absorption due to free CT-DNA was eliminated by adding a proper amount
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Abstract: The purpose of this lab is to prepare phenylmagnesium bromide‚ a Grignard reagent‚ and react it with benzophenone to give triphenylmethanol. Once made‚ the Grignard reagent will do a nucleophilic attack on the carbonyl carbon of the ketone‚ benzophenone. The result is an alkoxide that is then protonated to give the alcohol‚ triphenylmethanol. The purity of the final product will then be considered by melting point and IR spectroscopy. Final purified triphenylmethanol weighed 8.02 grams
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Solubility is the ability of a substance‚ or solute‚ to dissolve and homogenously disperse throughout another substance‚ or solvent. In order for drugs to be therapeutically effective and bioavailable‚ it must first be highly soluble. Poor solubility and low dissolution rates of drugs in the aqueous gastrointestinal tract lead to decreased bioavailability. Solubilization of poorly soluble drugs is a challenge in the formulation of newly developed drugs. Because many medications are administered orally
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