Experiment 5
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The Radiochemistry of Beryllium
National Academy of Sciences National Research Council I NUCLEAR SCIENCE SERIES The Radiochemistry ·of Beryllium COMMITTEE ON NUCLEAR SCIENCE L. F. CURTISS, Chairman ROBLEY D. EVANS, Vice Chairman National Bureau of Standards MassaChusetts Institute of Technol0gy J. A. DeJUREN, Secretary ./Westinghouse Electric Corporation H.J. CURTIS G. G. MANOV Brookhaven National' LaboratOry Tracerlab, Inc. SAMUEL EPSTEIN W. WAYNE MEINKE CalUornia Institute of Technology University of Michigan HERBERT GOLDSTEIN A.H. SNELL Nuclear Development Corporation of , oak Ridge National Laboratory America E. A. UEHLING H.J. GOMBERG University of Washington University of Michigan D. M. VAN PATTER E.D.KLEMA Bartol Research Foundation Northwestern University ROBERT L. PLATZMAN Argonne National Laboratory LIAISON MEMBERS PAUL C .. AEBERSOLD W.D.URRY Atomic Energy Commission U. S. Air Force J. HOW ARD McMILLEN WILLIAM E. WRIGHT National Science Foundation Office of Naval Research SUBCOMMITTEE ON RADIOCHEMISTRY W. WAYNE MEINKE, Chairman HAROLD KIRBY University of Michigan Mound Laboratory GREGORY R. CHOPPIN GEORGE LEDDICOTTE Florida State University. Oak Ridge National Laboratory GEORGE A. COW AN JULIAN NIELSEN Los Alamos Scientific Laboratory Hanford Laboratories ARTHUR W. FAIRHALL ELLIS P. STEINBERG University of Washington Argonne National Laboratory JEROME HUDIS PETER C. STEVENSON Brookhaven National Laboratory University of California (Livermore) EARL HYDE LEO YAFFE University of CalUornia (Berkeley) McGill University CONSULTANTS NATHAN BALLOU WILLIAM MARLOW Naval Radiological Defense Laboratory N atlonal Bureau of Standards JAMESDeVOE University of Michigan CHF.MISTRY-RADIATION AND RADK>CHEMIST The Radiochemistry of Beryllium By A. W. FAIRHALL. Department of Chemistry University of Washington Seattle, Washington May 1960 ' Subcommittee on Radiochemistry National Academy of Sciences - National Research Council Printed in USA. -
Synthesis of Aspirin
SYNTHESIS OF ASPIRIN I. OBJECTIVES AND BACKGROUND You will: synthesize acetylsalicylic acid (aspirin) by carrying out a simple organic reaction, separate your product from the reaction mixture by vacuum filtration, purify your product by recrystallization, perform a chemical test to identify the change in functional group from reactant to product, and determine the success of your synthesis by calculating the percentage yield of your product. INTRODUCTION Aspirin is one of the most widely used medications in the world. It is employed as an analgesic (pain relief), an anti-pyretic (fever control) and an anti-inflammatory. More recently, studies have indicated that daily intake of small doses of aspirin can lower the risk of heart attack and stroke in high-risk patients. The history of aspirin and its precursor dates back to ancient times. Documents attributed to Hippocrates, the father of modern medicine, from the 4th century B.C. refer to the alleviation of pain by chewing on the bark of a willow tree or ingesting a powder made from the bark and leaves of the willow. This remedy was passed on from generation to generation. Fast forward now to the 19th century, where the field of organic chemistry began to experience tremendous growth. By 1838, chemists had managed to isolate, purify and identify the component of willow bark that provided the analgesic benefit. The compound was named salicylic acid, which was based on the genus name of the willow. Efforts to market salicylic acid met with failure, due to an unfortunate side effect-- prolonged ingestion of salicylic acid led to stomach pain, and in some cases, ulcers. -
Pharmacokinetics of Salicylic Acid Following Intravenous and Oral Administration of Sodium Salicylate in Sheep
animals Article Pharmacokinetics of Salicylic Acid Following Intravenous and Oral Administration of Sodium Salicylate in Sheep Shashwati Mathurkar 1,*, Preet Singh 2 ID , Kavitha Kongara 2 and Paul Chambers 2 1 1B, He Awa Crescent, Waikanae 5036, New Zealand 2 School of Veterinary Sciences, College of Sciences, Massey University, Palmerston North 4474, New Zealand; [email protected] (P.S.); [email protected] (K.K.); [email protected] (P.C.) * Correspondence: [email protected]; Tel.: +64-221-678-035 Received: 13 June 2018; Accepted: 16 July 2018; Published: 18 July 2018 Simple Summary: Scarcity of non-steroidal anti-inflammatory drugs (NSAID) to minimise the pain in sheep instigated the current study. The aim of this study was to know the pharmacokinetic parameters of salicylic acid in New Zealand sheep after administration of multiple intravenous and oral doses of sodium salicylate (sodium salt of salicylic acid). Results of the study suggest that the half-life of the drug was shorter and clearance was faster after intravenous administration as compared to that of the oral administration. The minimum effective concentration required to produce analgesia in humans (16.8 µL) was achieved in sheep for about 0.17 h in the current study after intravenous administration of 100 and 200 mg/kg body weight of sodium salicylate. However, oral administration of these doses failed to achieve the minimum effective concentration as mentioned above. This study is of significance as it adds valuable information on pharmacokinetics and its variation due to breed, species, age, gender and environmental conditions. -
Aspirin Therapy in Primary Prevention of ASCVD
Aspirin Therapy in Primary Prevention of ASCVD ✖ The use of aspirin in primary prevention of atherosclerotic cardiovascular disease (ASCVD) has faced increasing controversy. ✖ A recently published four-trial series evaluating the use of aspirin therapy in the primary prevention of ASCVD has yielded potential challenges to decades-old research as reflected in the current U.S. Preventive Services PROBLEM Task Force guidelines. • In three of the four trials, aspirin failed to show benefit of primary cardiovascular prevention, while suggesting potential harm including higher all-cause mortality and major hemorrhage with reduced disability- free survival. • A fourth trial showed modest reduction in serious vascular events which were “largely counterbalanced” by the observed rate of major bleeding events within the trial. ✔ Low-dose aspirin SHOULD NOT be routinely administered for primary prevention of ASCVD to individuals >70 years of age and those at increased risk of bleeding GENERALLY NO SOLUTION irrespective of age (risk may outweigh benefit), or <40 years of age (insufficient data for determining risk-to-benefit). OCCASIONALLY YES ✔ Low-dose aspirin MAY be considered for primary prevention of ASCVD among adults aged 40-70 years who possess higher ASCVD risk but remain at low probability for bleeding events. LOW-DOSE ASPIRIN USE IN PRIMARY PREVENTION OF ASCVD Study Patient Population Benefit Harm (Aspirin vs. Placebo) ASCEND Diabetes without ASCVD iIn MACE hRisk of major bleeding 8.5% vs. 9.6% 4.1% vs. 3.2% (rate ratio 0.88, CI 0.79-0.97) (rate ratio 1.29, CI 1.09-1.52) ASPREE Elderly: ≥ 70 years of age No reduction all-cause mortality hRisk of major hemorrhage OR 5.9% vs. -
Salsalate Tablets, USP 500 Mg and 750 Mg Rx Only
SALSALATE RX- salsalate tablet, film coated ANDAPharm LLC Disclaimer: This drug has not been found by FDA to be safe and effective, and this labeling has not been approved by FDA. For further information about unapproved drugs, click here. ---------- Salsalate Tablets, USP 500 mg and 750 mg Rx Only Cardiovascular Risk NSAIDs may cause an increase risk of serious cardiovascular thrombotic events, myocardial infarction, and stroke, which can be fatal. This risk may increase with duration of use. Patients with cardiovascular disease or risk factors for cardiovascular disease may be at greater risk. (See WARNINGS and CLINICAL TRIALS). Salsalate tablets, USP is contraindicated for the treatment of perioperative pain in the setting of coronary artery bypass graft (CABG) surgery (See WARNINGS). Gastrointestinal Risk NSAIDs cause an increased risk of serious gastrointestinal adverse events including bleeding, ulceration, and perforation of the stomach or intestines, which can be fatal. These events can occur at any time during use and without warning symptoms. Elderly patients are at greater risk for serious gastrointestinal events. (See WARNINGS). DESCRIPTION Salsalate, is a nonsteroidal anti-inflammatory agent for oral administration. Chemically, salsalate (salicylsalicylic acid or 2-hydroxybenzoic acid, 2-carboxyphenyl ester) is a dimer of salicylic acid; its structural formula is shown below. Chemical Structure: Inactive Ingredients: Colloidal Silicon Dioxide, D&C Yellow #10 Aluminum Lake, Hypromellose, Microcrystalline Cellulose, Sodium Starch Glycolate, Stearic Acid, Talc, Titanium Dioxide, Triacetin. CLINICAL PHARMACOLOGY Salsalate is insoluble in acid gastric fluids (<0.1 mg/mL at pH 1.0), but readily soluble in the small intestine where it is partially hydrolyzed to two molecules of salicylic acid. -
B.Sc.(H) Chemistry-3Rd Semester
LIBRARY (18 [This question paper contains 4 printed pages Your Roll No. S1. No. of Q. Paper :7393 J Unique Paper Code 32171301 Name of the Course : B.Sc.(Hons.) Chemistry Name of the Paper Inorganic Chemistry II: s and p block elements Semester : II Time: 3 Hours Maximum Marks : 75 Instructions for Candidates: (i) Write your Roll No.. on the top immediately on receipt of this question paper. (ii) Attempt any five questions. (iii) All questions carry equal marks. 1. (a) Explain why most lines in the Ellingham diagram slope upward from left to right. What happens when a line crosses AG=0? 5 (b) Why is white phosphorus very reactive in comparison to red phosphorus ? Give the mechanism of stepwise hydrolysis of P,O,a. P.T.O 7393 7393 in Discuss the structure and bonding obtain the following: (c) formed (c) How will you Diborane. What are the products borazine ammonia (i) B-bromoborazine from when diborane reacts with excess 5 (ii) (NPF,), from (NPCl,), at (i) low temperature Lithium is different from other 2. (a) Chemistry of (ii) high temperature of alkali metals. Give examples in support 5 3515 the statement. 4. Give reason (any five): the gases? more stable than P, (b) What are clathrate compounds of noble (i) P, molecule is clathrates? Why do helium and neon not form molecule. 5 from B to Al but (ii) lonization energy decreases Ga. of increases from Al to Give one method of preparation (c) but a gas at room is the a liquid H,S peroxodisulphuric acid. -
Standard Operating Procedure SEA05 Laboratory Analysis-Version
Gulf Coast Network National Park Service Inventory and Monitoring Division Standard Operating Procedure SEA05 Laboratory Analysis—Version 1.0 Please cite this as: Meiman, J. 2019. Laboratory Analysis—Version 1.0. Gulf Coast Network Standard Operating Procedure NPS/GULN/SOP—SEA05. Gulf Coast Network, Lafayette, Louisiana. Summary This standard operating procedure (SOP) for laboratory analysis of total suspended solids (TSS) is adopted verbatim from USEPA Method 160.2. Revision Log Revision Date Author Changes Made Reason for Change New Version # METHOD #: 160.2 Approved for NPDES (Issued 1971) TITLE: Residue, Non-Filterable (Gravimetric, Dried at 103–105°C) ANALYTE: Residue, Non-Filterable INSTRUMENTATION: Drying Oven STORET No. 00530 1. Scope and Application a. This method is applicable to drinking, surface, and saline waters, domestic and industrial wastes. b. The practical range of the determination is 4 mg / L to 20,000 mg / L. 2. Summary of Method a. A well-mixed sample is filtered through a glass fiber filter, and the residue retained on the filter is dried to constant weight at 103-105°C. b. The filtrate from this method may be used for Residue, Filterable. 3. Definitions a. Residue, non-filterable, is defined as those solids which are retained by a glass fiber filter and dried to constant weight at 103-105°C. 4. Sample Handling and Preservation a. Non-representative particulates such as leaves, sticks, fish, and lumps of fecal matter should be excluded from the sample if it is determined that their inclusion is not desired in the final result. b. Preservation of the sample is not practical; analysis should begin as soon as possible. -
New Zealand Data Sheet 1
New Zealand Data Sheet 1. PRODUCT NAME NAXEN® 250 mg tablets 2. QUALITATIVE AND QUANTITATIVE COMPOSITION Each NAXEN 250 mg tablet contains 250 mg of Naproxen For the full list of excipients, see section 6.1. 3. PHARMACEUTICAL FORM NAXEN 250 mg tablets are yellow, biconvex, round tablet of 11 mm diameter with one face engraved NX250 and having a bisecting score. The score line is only to facilitate breaking for ease of swallowing and not to divide into equal doses. 4. CLINICAL PARTICULARS 4.1. Therapeutic indications NAXEN is indicated in adults for the relief of symptoms associated with rheumatoid arthritis, osteoarthritis, ankylosing spondylitis, tendonitis and bursitis, acute gout and primary dysmenorrhoea. NAXEN is indicated in children for juvenile arthritis. 4.2. Dose and method of administration After assessing the risk/benefit ratio in each individual patient, the lowest effective dose for the shortest possible duration should be used (see Section 4.4). During long-term administration the dose of naproxen may be adjusted up or down depending on the clinical response of the patient. A lower daily dose may suffice for long-term administration. In patients who tolerate lower doses well, the dose may be increased to 1000 mg per day when a higher level of anti-inflammatory/analgesic 1 | P a g e activity is required. When treating patients with naproxen 1000 mg/day, the physician should observe sufficient increased clinical benefit to offset the potential increased risk. Dose Adults For rheumatoid arthritis, osteoarthritis and ankylosing spondylitis Initial therapy: The usual dose is 500-1000 mg per day taken in two doses at 12 hour intervals. -
Laboratory Equipment Reference Sheet
Laboratory Equipment Stirring Rod: Reference Sheet: Iron Ring: Description: Glass rod. Uses: To stir combinations; To use in pouring liquids. Evaporating Dish: Description: Iron ring with a screw fastener; Several Sizes Uses: To fasten to the ring stand as a support for an apparatus Description: Porcelain dish. Buret Clamp/Test Tube Clamp: Uses: As a container for small amounts of liquids being evaporated. Glass Plate: Description: Metal clamp with a screw fastener, swivel and lock nut, adjusting screw, and a curved clamp. Uses: To hold an apparatus; May be fastened to a ring stand. Mortar and Pestle: Description: Thick glass. Uses: Many uses; Should not be heated Description: Heavy porcelain dish with a grinder. Watch Glass: Uses: To grind chemicals to a powder. Spatula: Description: Curved glass. Uses: May be used as a beaker cover; May be used in evaporating very small amounts of Description: Made of metal or porcelain. liquid. Uses: To transfer solid chemicals in weighing. Funnel: Triangular File: Description: Metal file with three cutting edges. Uses: To scratch glass or file. Rubber Connector: Description: Glass or plastic. Uses: To hold filter paper; May be used in pouring Description: Short length of tubing. Medicine Dropper: Uses: To connect parts of an apparatus. Pinch Clamp: Description: Glass tip with a rubber bulb. Uses: To transfer small amounts of liquid. Forceps: Description: Metal clamp with finger grips. Uses: To clamp a rubber connector. Test Tube Rack: Description: Metal Uses: To pick up or hold small objects. Beaker: Description: Rack; May be wood, metal, or plastic. Uses: To hold test tubes in an upright position. -
Using Aspirin for the Primary Prevention of Cardiovascular Disease
Partnership for HEALTH Heart and Circulation Clinician Fact Sheet Using Aspirin for the Primary Prevention of Cardiovascular Disease Your patients rely on you for accurate, up-to-date preventive health information. This fact sheet for clinicians provides information about the use of aspirin to prevent first myocardial infarctions in men and first ischemic strokes in women. It is designed to complement the patient brochures: y Talk With Your Health Care y Talk With Your Health Care Provider About: Taking Aspirin Provider About: Taking to Prevent Heart Attacks— Aspirin to Prevent Strokes— for Men for Women Who should take aspirin to prevent How do I determine benefit? cardiovascular disease? An individual’s potential clinical benefit The US Preventive Services Task Force (USPSTF) recommends the use of aspirin from aspirin depends on his or her for the primary prevention of cardiovascular disease (CVD) when a net benefit baseline risk. is present. A net benefit means that the potential benefit from taking aspirin outweighs the harms, mainly gastrointestinal (GI) bleeding. Specifically, MI Risk Factors for Men y Aspirin is recommended for men age 45–79 to reduce risk of myocardial y Age infarction (MI) when a net benefit is present. y Diabetes y Total cholesterol level y Aspirin is recommended for women age 55–79 to reduce risk of ischemic y HDL cholesterol level stroke when a net benefit is present. y High blood pressure The USPSTF recommends AGAINST the use of aspirin for the primary prevention of y Smoking MI in men less than age 45 or stroke in women less than age 55. -
Salicylate, Diflunisal and Their Metabolites Inhibit CBP/P300 and Exhibit Anticancer Activity
RESEARCH ARTICLE Salicylate, diflunisal and their metabolites inhibit CBP/p300 and exhibit anticancer activity Kotaro Shirakawa1,2,3,4, Lan Wang5,6, Na Man5,6, Jasna Maksimoska7,8, Alexander W Sorum9, Hyung W Lim1,2, Intelly S Lee1,2, Tadahiro Shimazu1,2, John C Newman1,2, Sebastian Schro¨ der1,2, Melanie Ott1,2, Ronen Marmorstein7,8, Jordan Meier9, Stephen Nimer5,6, Eric Verdin1,2* 1Gladstone Institutes, University of California, San Francisco, United States; 2Department of Medicine, University of California, San Francisco, United States; 3Department of Hematology and Oncology, Kyoto University, Kyoto, Japan; 4Graduate School of Medicine, Kyoto University, Kyoto, Japan; 5University of Miami, Gables, United States; 6Sylvester Comprehensive Cancer Center, Miami, United States; 7Perelman School of Medicine, University of Pennsylvania, Philadelphia, United States; 8Department of Biochemistry and Biophysics, Abramson Family Cancer Research Institute, Philadelphia, United States; 9Chemical Biology Laboratory, National Cancer Institute, Frederick, United States Abstract Salicylate and acetylsalicylic acid are potent and widely used anti-inflammatory drugs. They are thought to exert their therapeutic effects through multiple mechanisms, including the inhibition of cyclo-oxygenases, modulation of NF-kB activity, and direct activation of AMPK. However, the full spectrum of their activities is incompletely understood. Here we show that salicylate specifically inhibits CBP and p300 lysine acetyltransferase activity in vitro by direct *For correspondence: everdin@ competition with acetyl-Coenzyme A at the catalytic site. We used a chemical structure-similarity gladstone.ucsf.edu search to identify another anti-inflammatory drug, diflunisal, that inhibits p300 more potently than salicylate. At concentrations attainable in human plasma after oral administration, both salicylate Competing interests: The and diflunisal blocked the acetylation of lysine residues on histone and non-histone proteins in cells. -
Ester Resveratrol Analogues, Chromium Trioxide Oxidation of Terpenes, and Synthesis of Mimics of (-)-Englerin A
Brigham Young University BYU ScholarsArchive Theses and Dissertations 2014-08-01 Synthesis of 4'-Ester Resveratrol Analogues, Chromium Trioxide Oxidation of Terpenes, and Synthesis of Mimics of (-)-Englerin A Mark Jeffrey Acerson Brigham Young University - Provo Follow this and additional works at: https://scholarsarchive.byu.edu/etd Part of the Biochemistry Commons, and the Chemistry Commons BYU ScholarsArchive Citation Acerson, Mark Jeffrey, "Synthesis of 4'-Ester Resveratrol Analogues, Chromium Trioxide Oxidation of Terpenes, and Synthesis of Mimics of (-)-Englerin A" (2014). Theses and Dissertations. 5458. https://scholarsarchive.byu.edu/etd/5458 This Dissertation is brought to you for free and open access by BYU ScholarsArchive. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of BYU ScholarsArchive. For more information, please contact [email protected], [email protected]. Synthesis of 4’-Ester Resveratrol Analogues, Chromium Trioxide Oxidation of Terpenes, and Synthesis of Mimics of (–)-Englerin A Mark Jeffrey Acerson A dissertation submitted to the faculty of Brigham Young University in partial fulfillment of the requirements for the degree of Doctor of Philosophy Merritt B. Andrus, Chair Steven L. Castle Matt A. Peterson Joshua L. Price Richard K. Watt Department of Chemistry and Biochemistry Brigham Young University August 2014 Copyright © 2014 Mark Jeffrey Acerson All Rights Reserved ABSTRACT Synthesis of 4’-Ester Resveratrol Analogues, Chromium Trioxide Oxidation of Terpenes, and Synthesis of Mimics of (–)-Englerin A Mark Jeffrey Acerson Department of Chemistry and Biochemistry, BYU Doctor of Philosophy 4’-ester analogues of resveratrol were synthesized using reaction conditions developed to produce mono-ester products in the presence of two other unprotected phenols.