CHEMISTRY OF NATURAL PRODUCTS Terpenoids Sameena Bano Department of Chemistry Faculty of Science Jamia Hamdard New Delhi-110062 (24.09.2007) CONTENTS Introduction Classification of Terpenoids Isolation of mono and sesquiterpenoids General properties of Terpenoids General methods of structure elucidation Terpenoids Citral Menthol Camphor Eugenol Keywords Terpenes‚ isoprene‚ citral‚ menthol‚ camphor and eugenol 1 Introduction There are many different classes of naturally occurring
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Developing Fuels * All gases take up the same volume under the same conditions. AT room temperature and room pressure this volume is 24 dm3. * Number of moles= volume in dm3 24 * Balanced equations can also be used to work out gas volumes. In the equations: 2Na + 2H2O 2NaOH + H2‚ where 15g of sodium is reacted‚ you can work out the volume of gas from working out the number of moles in 15g Na = 0.65 mol. Then you see that 2 mol of Na 1mol of H2‚ Thus 0.65 mol Na 0.325 mol H2. 0.325
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The goals of this experiment are to determine if the products derived from amide synthesis and Williamson Ether Synthesis are identical‚ and if one of the synthetic routes is more advantageous than the other. In Part 1‚ an attempt to synthesize acteophenetidin crystals by amide synthesis was made. We began by removing the colored impurities from the p-Phenetidine (reddish-brown) by placing 2g of the sample in 38 mL of hydrochloric acid and heating the solution to boiling point. Upon reaching just
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145.2°C Melting point -30.6°C Flash point 31°C (87 F) Autoignition temperature 490°C Relative density 0.9059 at 25°C Vapour pressure 10 mm at 35°C Saturation vapour concentration 6600 ppm at 20°C practically insoluble in water; Soluble in alcohol‚ ether‚ methanol‚ acetone and carbon disulfide. Explosive limits in air 1.1 to 6.1% by volume in air Table 1.4: The table of the properties of Styrene.
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Chikungunya Fact sheet N°327 March 2008 ________________________________________ Key facts • Chikungunya is a viral disease that is spread by mosquitoes. It causes fever and severe joint pain. Other symptoms include muscle pain‚ headache‚ nausea‚ fatigue and rash. • The disease shares some clinical signs with dengue‚ and can be misdiagnosed in areas where dengue is common. • There is no cure for the disease. Treatment is focused on relieving the symptoms. • The proximity of mosquito breeding
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View the Causation and Correlation Presentation. Compare and contrast causation and correlation in a 200- to 300-word post. Explain whether each of the following may be classified as a causation or correlation. Justify your reasoning. Identify any possible lurking variables that may be present. Wealthy people are thin. This is an example of correlation. It is a case where people associate being wealthy with having more healthy habbits. In my opinion it is just conjecture and personal opinion
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John Snow (1813 - 1858) Snow was a British physician who is considered one of the founders of epidemiology for his work identifying the source of a cholera outbreak in 1854. John Snow was born into a labourer’s family on 15 March 1813 in York and at 14 was apprenticed to a surgeon. In 1836‚ he moved to London to start his formal medical education. He became a member of the Royal College of Surgeons in 1838‚ graduated from the University of London in 1844 and was admitted to the Royal College
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Mother figures aren’t always related to you but‚ that doesn’t mean they’re any less a mother to you. Mother figures could be you nanny a stepmom aunt it could be anyone your extremely close too. That’s why I think Calpurnia is a better mother figure to the kids than aunt Alexandria. Calpurnia teaches them life lessons like she teaches the kids manners and how to cook she explains so they will know for the future. She also teaches them to be respectful like when she scolded scout for saying all those
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You Think GD Would Have Given you Hair Like That if He Loved You? by Deborah Stoll‚ Just reading the titled you can grasp the discrimination. It grabs your attention‚ like how can you tell that to a person‚ God loves everyone. It is appalling how some people treat each other for being different. The way this woman maltreats this nine-year-old as if she is the devil because Jewish or as Miss Sherry believes not leading a good Christian life‚ its outrageous. From all the text I read‚ this one grabs
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Abstract: The interferometer is the most accurate measuring device known to man. It was created by Albert A. Michelson. The operation of the interferometer described briefly is a light beam that is separated by a beam splitter. The two beams then travel equal distances at 90° of each other where they are reflected off two mirrors back through the beam splitter. They are then superimposed on to a screen. The screen will display an interference pattern of fringes. The interferometer
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