calcium channel blockers are more selective for arteries than myocardium‚ as the cardiac calcium channels are not of the dihydropyridine-type). Systematic (IUPAC) name (RS)-3-ethyl 5-methyl 2-[(2-aminoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1‚4-dihydropyridine-3‚5-dicarboxylate. Stereoisomerism Amlodipine is a chiral calcium antagonist‚ currently on the market and in therapeutic use as a racemate [1:1 mixture of (R)-(+)- and (S)-(–)-amlodipine]] A method
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trimyristin and myristic acid that makes it up‚ it’s a mixture of many compounds. Although nutmeg is one of those natural sources that trimyristin is easily extracted from it does take some time to achieve in lab. Ground nutmeg seeds are extracted with methyl ether and the resulting solid recrystallized from acetone and to yield pure trimyristin. Most of the other components of Nutmeg remain in the acetone as they are ether soluble. The hydrolysis of trimyristin follows acidification and yields glycerol
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Microbiology Laboratory Report Identification of Unknown Bacteria 03/10/05- 04/01/05 Authors: Richard Hendricks‚ Jessica Prebish; NMU Abstract: Broth culture 16 was randomly selected by our group and subjected to qualitative tests for taxonomic identification. The culture did appear homogenous throughout the testing period and is currently retained by Northern Michigan University’s department of Microbiology. We suggest that culture 16 is an example of Escherichia coli. Background: Techniques
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IMViC contains a series of four tests: Indole‚ Methyl red‚ Voges-Proskauer‚ and Citrate utilization. The indole portion of this test will not be performed since U45 was determined indole negative with the SIM test. The methyl red portion of the IMViC tests utilizes methyl red as a pH indicator and indicates whether a microbe uses the mixed acid fermentation pathway. If the pH falls to 4 or lower (acidic)‚ the
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organic material. The researcher found out that tarragon plant (Artemisia dracunculus) has the ability of it smell to prevent insects like aphids to destroy the plants or the crops and it has a component that has insecticidal effect such as estragole or methyl chavicol‚ cis and trans ocimene. STATEMENT OF THE PROBLEM The study entitled “Tarragon Plant (Artemisia dracunculus) as an insecticide“aims to answer the following objective: 1. Test the efficacy of the tarragon plant to kill aphids
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measurement with indicators and pH meter In this experiment the student will need a Bunsen burner‚ ring stand‚ wire gauze‚ pH meter‚ red cabbage‚ about seven small beakers (clean)‚ seven test tubes‚ universal pH paper‚ both red and blue litmus paper‚ methyl red and several solutions provided by the instructor. First the student will prepare the red cabbage by filling a beaker with 50 mL of distilled water and placing about 1 gram of finely chopped red cabbage and boil for 10 minuets. Let the beaker cool
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3. Results and discussion 3.1 Nutritional analysis In the present study‚ the potential benefits were shown by nutritional attributes of dried bathua (Table1). Moisture content and dry matter analysis‚ reporting during nutritional analysis is very important because it directly affects the nutritional content of vegetable. The moisture content was quite low (5.06%) which may be advantageous in view of increasing the sample’s shelf life. Bathua was found to be rich in carbohydrates (40.84%). There
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can be converted to an alkene by dehydration‚ which is often brought on by heating the alcohol with either 85% phosphoric acid or concentrated sulfuric acid [1]. The objective of this experiment is to dehydrate 3-methyl-3-pentanol to obtain the product mixture of isomeric alkenes 3-methyl-2pentene and 2-ethyl-1-butene. Then use the gas chromatography to separate the product mixture and analyze the composition [2]. [pic] [pic] [pic] Figure1: Table of Reagents |Name
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the Layers o Drying Agents o Part 1: The Technique of Neutral Liquid/Liquid Extraction The description is for dichloromethane-aqueous solution mixture‚ but you will use the same technique for your tert-butyl methyl ether-aqueous solution mixture. Note‚ however‚ that the ether is less dense than water‚ while dichloromethane is denser than water. o Part 2: Acid/Base Liquid/Liquid Extraction (p.147-150 middle) 2) THIS HANDOUT: Scheme of Procedure
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250 cm3 beaker‚ 250 cm3 volumetric flask with stopper‚ filter funnel‚ glass pipette‚ glass rod‚ de-ionized water‚ Substance Z‚ 25 cm3 bulb pipette‚ pipette filter‚ 250 cm3 conical flask‚ burette‚ burette stand & holder‚ 0.1225 M hydrochloric acid‚ methyl orange indicator. Procedure: Part 1: Making a standard solution of substance Z 1. About 1.3 g to 1.7 g of substance Z was weighed out into the 100 cm3 beaker . 2. The 100 cm3 beaker and its contents were reweighed accurately and the mass was recorded
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