years all over the world to treat the same symptoms that we use aspirin to treat. The bark from willow trees‚ along with a few other trees‚ produces an anti-inflammatory agent called salicin. Salicin is an aromatic alcohol‚ this is indicated by the OH group of the benzene ring (benzene is aromatic hydrocarbon‚ which is an unsaturated cyclic hydrocarbon). Benzene and the OH groups are substituents as shown in the diagram. By the
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it’s a gift for a family member or just a decoration around your house‚ Christmas crafts bring delight for everyone involved. One simple and very popular craft is candle making. Here are a few steps that will show you how to make a wonderful and aromatic pinecone candle: In order to complete this craft‚ you will need the following materials: paraffin wax candlewick handful of small pinecones cinnamon/nutmeg cylindrical candle mold cooking pot candle dye (optional) Once you have assembled your materials
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- it resembles plastic. Polystyrene is an aromatic hydrocarbon‚ it has several complicated double covalent bonds and is a chain of styrene molecules (C6H5CH=CH2) which is much unsaturated. Gasoline is made up of an assortment of simple aliphatic hydrocarbons such as ethane and isobutene and some aromatic hydrocarbons added as enhancers‚ as their break-up generates more energy. When you drop polystyrene into gasoline; the high energy bonds in the aromatic chain break in favor of simpler single covalent
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Chapter 5: Solutions‚ Colloids‚ and Membranes Chapter Summary Mixtures and Solutions * A mixture maintains its identity regardless of the proportions of its components. * A mixture can be separated into its pure components through physical separation techniques. * The components are distributed uniformly throughout a homogenous mixture. * The components are not distributed uniformly throughout a heterogeneous mixture. * A solution is composed of a solvent and one or more solutes
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Cucumis melo Linn. was first described by Linne in 1753. It belong to the family Cucurbitaceae which consists of 825 species in 118 genera (Milind and Kulwant‚ 2011). The birth of Cucumis melo L. has been uncertain. However‚ novel review has testified its origin from East and South Africa. Different cultivated varieties and different forms of fruits have emerged universally in tropical and sub-tropical regions. Cucumis melo L. has a wide geographic distribution. Native countries include South Africa
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scientists began to make substitute synthetic compounds similar in structure to cocaine‚ which consists of an aromatic residue‚ an intermediate chain‚ and a basic tertiary amino group‚ shown in figure 1. Figure 1: Structure of Cocaine (ChemWiki) All of the synthetic drugs that derived from the structure of cocaine had similar functional groups including an aromatic ring at one end‚ which is typically an ester of an
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1: The structure of Eugenol. The IR spectroscopy run on the sample gave results as shown in Table 2. The –OH stretch accounts for the hydroxyl group on the aromatic ring as shown in Figure 1. The C-H peaks are from the mexthoxy group on the aromatic ring. The C=C-H are a result of the hydrogen’s bonded to the carbons of the aromatic ring. The peak from the C=O stretch is not from the compound‚ but may be a result of product contamination. Absorbance | Shape | Intensity | Group-motion |
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This article was downloaded by: [CIMAP Central Institute of Medicinal & Aromatic Plants] On: 07 March 2013‚ At: 21:43 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House‚ 37-41 Mortimer Street‚ London W1T 3JH‚ UK Natural Product Research: Formerly Natural Product Letters Publication details‚ including instructions for authors and subscription information: http://www.tandfonline.com/loi/gnpl20 Investigation on
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RESEARCH PAPER ON BIOLOGICAL ACTIVITY OF ACTINOMYCETES ................ ABSTRACT: The microorganisms are ubiquitous in nature. They are found in probably every environmental condition present on earth. Actinomycetes were originally considered to be an intermediate group between bacteria and fungi but now are recognized as prokaryotic organisms with high G+C (>55%) content in their DNA. Our project aim is to evaluate some biological activities of Actinomycetes like:
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Abstract In the asymmetric synthesis of (S)-Ibuprofen‚ the compound is synthesized in nonracemic form directly from an achiral precursor. First‚ racemic ibuprofen was converted to aN achiral ketene via the acid chloride by adding thionyl chloride followed by triethylamine. Then‚ ketene was reacted with a chiral and nonracemic (S)-ethyl lactate produces a mixture of diasteromeric esters of ibuprofen derivatives where (S) configuration is predominantly. Finally‚ hydrolysis of the ester then provides
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