Why us is penicillin the miracle drug? We all know that penicillin is one of the top known class of antibiotics prescribed today. Although this drug has been getting numerous applauds since the mid 1900s on its effectiveness; it did not start at that way. The biggest challenge to this discovery was it mass production‚ which later came down the road. This drug was discovered in a very unusual way by Alexander Fleming in 1920. Fleming had returned from a summer vacation and began sorting petri dishes
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peak and retention time was arrived at by undertaking characterization runs for pure lycopene standard at a given concentration using combination of different columns (BEH2EP‚ BEH1.7‚ C18); mobile phase ratio CO2:methanol/ethanol(80:20‚ 85:15‚ 90:10 – v/v); flow rates (0.5‚1‚1.5 ml/min);active back pressures (1600‚1800 and 2000psi); and column temperatures (35‚45 and 55⁰ C). The system conditions for further validation of its specificity‚ linearity‚ recovery and precision are as follows: 3.4.1
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Partition equilibrium of a solute between two immiscible solvents Two-dimensional thin-layer chromatography 2 2 3 6 Chapter 65 Quantitative methods of analysis Detection of end point in acid-alkali titration 8 Chapter 66 Instrumental analytical methods More about infrared spectroscopy More about mass spectrometry 12 15 Chapter 67 Contribution of analytical chemistry to our society Gas chromatography-mass spectrometry 32 PART XV ANALYTICAL CHEMISTRY Chapter 63 Detecting the presence
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FORENSIC CHEMISTRY FORENSIC CHEMISTRY SUMMARY NOTES |Ensuring accuracy and contamination of samples for analysis – 1a and 1A |Ensuring accuracy and contamination of samples for analysis – 1a and | | |1A (continued) | |Caution must be taken by scene investigators with regard to their tools‚ |
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Results and Discussion – Expt. 3 (Crystallization) Name: Parts A and B: 1. Please comment on the relative purity of your recrystallized salicylic acid (Hint: You should use your empirical data to support your claim). -The Salicylic acid that I obtained had a melting point range around 157-158 degrees Celsius for Part A. For Part B the melting point range was 156-157.5 degree Celsius. Part B‚ I would say the sample is less pure because of the notion that impurities lower the melting point
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Experiment 2: Fractional Distillation of a Mixture of Two Unknowns Background: Boiling is a process familiar to anyone who has cooked pasta or brewed tea. As heat is applied to a pan of water‚ the temperature of the water increases until it reaches 100°C (212°F). At this temperature‚ additional heat causes the water to bubble vigorously as the liquid water is converted into gaseous water‚ or steam. Most organic liquids will behave in a similar fashion. On heating‚ the temperature of the liquid
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Isolation of Essential Oils by Steam Distillation Procedure Part A Apparatus 1.) Using a 20- or 25-mL round-bottom flask (for distillation) and a 10-mL round-bottom flask (for collection) assemble a distillation apparatus 2.) Use an aluminum block to heat and insert a water condenser 3.) The collection flask may be immersed in ice to ensure condensation of the distillate Preparing the Spice 1.) Weigh approximately 1.0 g of your spice or herb onto a piece of weighing paper and record the exact
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COMMON TECHNICAL DOCUMENT CEFTEN (CEFTIBUTEN CAPSULES 400 MG) MODULE 3 QUALITY 3.1 MODULE 3 TABLE OF CONTENT Sr. No. | Contents | Page No. | 3.1 | MODULE 3 TABLE OF CONTENT | 2 | 3.2 | BODY OF DATA | 4 | 3.2.S | Drug Substance | 4 | 3.2.P | Drug Product | 5 | 3.2.P.1 | Description and Composition of the Drug Product | 5 | 3.2.P.2 | Pharmaceutical Development | 6 | 3.2.P.2.1 | Components of the Drug Product | 8 | 3.2.P.2.1.1 | Drug Substance | 8 | 3.2.P
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Almost everything in our world has some of their origins from chemicals‚ scientists in the chemical industries are always working to find ways to make these chemicals useful to us‚ they bring improvements into daily use substances like paints‚ medicines‚ cosmetics and plastics‚ so that they are more environmentally sustainable‚ and efficient. Scientists employed in the chemical industry trained and specialising in chemistry are called chemists. A chemist can gain expertise in a range of chemistry
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Candy Chromatography By: Avani Reddy 7th Grade Introduction Ever wondered why candies are different colors? Ever wondered why candies are different colors? Many candies contain colored dyes. Bags of M&Ms or Skittles contain candies of various colors. The labels tell us the names of the dyes used in the candies. But which dyes are used in which candies? We can answer this by dissolving the dyes out of the candies and separating them using a method called chromatography. Research
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