is considered an alternate to aspirin since it does not irritate the stomach (Richman‚ 2004). It also has very low toxicity is it is used properly. Acetaminophen is cheap and easily obtainable from any pharmacy. Acetaminophen is created when the amine group of p-aminophenol is acetylated by acetic anhydride. This creates an amide functional group and the by-product of this reaction is acetic acid. The crude acetaminophen will form as a white solid after the acetylated reaction. To turn this crude
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N-dimethyltyramine‚ is an alkaloid of the phenethylamine class that occurs naturally in a variety of plants‚ taking its name from one of the commonest‚ barley (Hordeum species). Chemically‚ hordenine is the N-methyl derivative of N-methyltyramine‚ and the N‚N-dimethyl derivative of the well-known biogenic amine tyramine‚ from which it is biosynthetically derived and with which it shares some pharmacological properties (see below). Currently‚[1] hordenine is widely sold as an ingredient of nutritional supplements
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BACHELOR OF SCIENCE (HONS) BIOTECHNOLOGY YEAR 1 SEMESTER 1‚ 2 & 3 UDBB 1164 FUNDAMENTAL ORGANIC CHEMISTRY 0 EXPERIMENT 1 PROPERTIES OF HYDROCARBONS Introduction Hydrocarbons are compounds which contain only carbon and hydrogen‚ can be classified into several types‚ depending on their structure. Aliphatic hydrocarbons are divided into three classes: alkanes (e.g. methane‚ ethane and propane) have only single bonds‚ and are said to be saturated; alkenes (e.g. ethene and propene)
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Advil; Alaxan; Skelan; Dolan) 1.b. Naproxen (Naprosyn; Aleve) 1.c. Naproxen Na (Flanax) 1.d. Flurbiprofen (Ansaid) 1.e. Ketoprofen (Ketofen) 2. Acetic Acid Derivatices 2.a. Indomethacin (Indocid) 2.b. Sulindac (Clinaril) 3. Fenamic Acid Derivatives 3.a. Meclofenamate (Meclomen) 3.b. Mefenamic acid (Dolfenal) 3.c. Diclofenac Na 4. Pyrazolones 4.a. Phenylbutazone (Skelan) 4.b. Oxyphenbutazone (Mindaril) 5. Oxicams – for arthritic pain 5.a. Piroxicam (Feldene) – reheumatic/arthritic pain
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solution‚ as shown here. RCO2–(aq) + H+(aq) → RCO2H(s) Organic bases (e.g.‚ amines) that are insoluble in water can be separated by extraction with hydrochloric acid. Addition of HCl to the amine produces the corresponding ammonium salt‚ which is soluble in water but not in organic solvents. The amine can be recovered from the aqueous solution by treatment with a base‚ converting the ammonium salt back to the amine. The amine is not water-soluble and will precipitate‚ as shown here. Using your understanding
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How to Review for the MCAT You want to review for the MCAT in the most efficient way. First‚ review only the topics that will be on the exam. Second‚ review these exam topics with the test in mind. What this means is that you must do content review in conjunction with working real exam questions. If you just do content review alone‚ then you’ll end up forgetting most of what you went over. However‚ if you work MCAT problems while doing content review‚ you’ll retain most of what you learned. Incidentally
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Introduction 3.2 Group Frequencies 3.2.1 Mid-Infrared Region 3.2.2 Near-Infrared Region 3.2.3 Far-Infrared Region 3.3 Identification 3.4 Hydrogen Bonding 3.5 Spectrum Manipulation 3.5.1 Baseline Correction 3.5.2 Smoothing 3.5.3 Difference Spectra 3.5.4 Derivatives 3.5.5 Deconvolution 3.5.6 Curve-Fitting 3.6 Concentration 3.7 Simple Quantitative Analysis 3.7.1 Analysis of Liquid Samples 3.7.2 Analysis of Solid Samples 3.8 Multi-Component Analysis 3.9 Calibration Methods References Contents 4 Organic Molecules
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sources: Oil‚ margarine‚ dairy blends Salad dressings Fried snack foods Pastry‚ scones‚ biscuits Note: natural antioxidants are OK – includes vitamin C (codes 300 –304)‚ Vitamin C derivatives (codes 317‚ 318) & Vitamin E (codes 306 –309) SORBIC ACID & SORBATES (200 – 203) • Inhibit growth of yeast & moulds‚ between pH 4-6. Limited effect on bacteria‚ so often used as a cheese preservative (allows fermentation
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Indian generic drug companies. Facts of the case Roche‚ along with Pfizer (as a joint applicant)‚ claimed that it had been granted a patent in February 2007 for ’erlotinib’‚ the molecular [6‚ 7-bis (2-methoxyethoxy) quinazolin-4yl]-(3-ethynylphenyl) amine hydrochloride. The patented product‚ which Roche introduced onto the Indian market in 2006‚ was marketed under the brand name TARCEVA. In December 2007 and January 2008‚ Indian newspapers reported Cipla’s plan to launch a generic version of ‘erlotinib’
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and purify the unknown D liquid and solid by using its acidic and basic characteristics in a chemically active extraction then to identify the unknowns by analyzing the physical properties on IR and NMR spectrums. The neutral solid was purified through recrystallization and the melting point range was determined to be 47.5oC to 48.9oC. The basic liquid was purified with simple distillation and the boiling point of 135oC was concluded. Through the analysis of IR spectrum of each unknown the structures
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