Aspirin

Anti-Ulcerative Activity of Ipomoea Aquatica Forsk

Anti-ulcerogenic evaluation of the ethanolic extract of water spinach (Ipomoea aquatica Forsk) in aspirin ulcerated rats. Dhanasekaran. Sivaraman*1 and Palayan. Muralidaran1 *1 Department of Pharmacology and Toxicology,C. L. Baid Metha College of Pharmacy,Jyothi Nagar,Thoraipakkam,Chennai 97,Tamil Nadu,India For correspondence:Dhanasekaran. Sivaraman,Department of …

The Mechanisms Actions of Non-Steroidal Anti-Inflammatory Drugs (Nsaids)

The mechanisms actions of non-steroidal anti-inflammatory drugs (NSAIDs) To summarise, non-steroidal anti-inflammatory drugs are drugs which have anti-inflammatory, analgesic and antipyretic properties due to their mechanism and enzymes involved COX-1 and COX-2. However as well as being beneficial NSAIDs have …

Drugs and medicines

Illness is a fact of human life, and medicine has been our response to making people better. The science of medicine stretches back through the earliest civilisations, and the development of drugs has seen an evolution from natural remedies to …

Aspirin Essay

Aspirin or acetylsalicylate acid is a compound that is widely used in medicine. The use of aspirin in medicine began long before the active reagent was removed from its natural source. The first documented use of aspirin was found in …

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Birth of aspirin

Hippocrates of Cas (460-377 B. C. ), The Healer, noted that chewing leaves of willow (Salix) reduced pain, and he prescribed this remedy for women in labor. The Healer certainly did not discover this drug, which was used for centuries …

You’Re a contract Painkiller

In You Are a Contract Painkiller (1997, p. 111), author Maureen Littlejohn makes extensive use of personification to describe the functioning of Aspirin in our body, its various properties to fight pain, and its evolution over the years. Littlejohn describes …

You’Re a Contract Painkiller

In You Are a Contract Painkiller (1997, p. 111), author Maureen Littlejohn makes extensive use of personification to describe the functioning of Aspirin in our body, its various properties to fight pain, and its evolution over the years. Littlejohn describes …

History of aspirin

Aspirin is one of the most commonly used drugs in the world.. For centuries people throughout the world. Aspirin was discovered about 3500 years ago. A collection of 877 medicinal recipes, The Ebers papyrus, before Christ, from the middle of …

Acetic anhydride

Penicillin is the basis for most of the antibiotics in the world just as aspirin is the basis for many drugs. Therefore, if there had been only two drugs to invent, it would be down to penicillin and aspirin. Hippocrates, …

Synthesis of acetylsalicylic Acid

Acetylsalicylic acid (commonly known as ‘aspirin’) was synthesized (1. 11 g, 34. 05% yield) from salicylic acid and acetic anhydride. The final product was a white crystalline solid and an unknown amorphous substance that was beige in color. The melting …

Synthesis of Aspirin

Salicylic acid derivatives, or salicin, are found in the bark of the willow tree. In the 5th century B. C. , Hippocrates ground the bark into a powder, and later, the Natives Americans chewed on the bark to alleviate fever …

Acetic anhydride

Introduction: Acetylsalicylic acid is a wonder drug par excellence. It is widely used as an analgesic (pain reliever) and fever depressant. It also reduces inflammation and may even prevent heart attacks. It has a few side effects for some people, …

Acetic anhydride

Penicillin is the basis for most of the antibiotics in the world just as aspirin is the basis for many drugs. Therefore, if there had been only two drugs to invent, it would be down to penicillin and aspirin. Hippocrates, …

Carboxylic acid

Part I: Obtain four test tubes, cleanses and label each (test tube 1, 2, 3, and 4). Individually weigh out 1 g of salicylic acid and 2 mL of acetic anhydride and place them in the test tubes. Mix thoroughly …

Synthesis of aspirin

Aspirin is prepared by the esterification of salicylic acid with acetic anhydride under acidic conditions. The phenol group in salicylic acid is replaced by a carboxyl group through electrophilic substitution. The mechanism for the reaction can be summarized as follows: …

Analysis of aspirin

1. Aim To determine the percentage of aspirin in different commercial preparations and to find which is the best value for money 2. Hypothesis The greater the percentage of acetylsalicylic acid (ASA) in the tablet, more powerful and efficient the …

Synthesis of aspirin

Salicylic acid derivatives, or salicin, are found in the bark of the willow tree. In the 5th century B. C. , Hippocrates ground the bark into a powder, and later, the Natives Americans chewed on the bark to alleviate fever …

Synthesis of Aspirin

In this experiment, we produced 4. 21 g of acetylsalicylic acid. Our theoretical yield was calculated to be 5. 22 g. Therefore our % yield was determined to be 80. 6%. The experimental boiling point range of acetylsalicylic acid was …

Synthasis of aspirin

Abstract: Introduction/Objective: Prepare and analyze aspirin from salicylic acid and acetic anhydride, and calculate the percent yield of the synthesized aspirin. Materials and Methods: This experiment called for the synthesis of acetylsalicylic acid, or aspirin, by using salicylic acid, acetic …

Aspirin sample

This lab has the following two concepts: synthesis of acetylsalicylic acid and analysis of acetylsalicylic acid. Synthesis is a purposeful execution of chemical reactions to obtain a product. This concept is used in the first part of the lab; when …

Synthesis of Aspirin

Learning Goals 1. To synthesize aspirin from salicylic acid and acetic anhydride. 2. To purify the crude product by Recrystallization. Introduction Most drugs are chemical compounds which are described as “organic compounds” because they are comprised primarily of the elements …

Synthesis of aspirin

Aspirin or acetylsalicylic acid is one of the most commonly used drugs in the world. It can act as an analgesic, an NSAID, an antipyretic, and a platelet aggregation inhibitor. Aspirin was originally derived from the active ingredient in willow …

Aspirin Synthesis

A. Abstract Aspirin is the common name for the compound acetylsalicylic acid, widely used as a fever reducer and as a pain killer. The first part of the experiment aims to synthesize aspirin from the reaction of salicylic acid with …

Carboxylic acid

At the end of the experiment, students should be able to synthesise pure aspirin using chemical tests such as esterification and recrystallization independently and to also find out the melting point range of aspirin using melting point determination. INTRODUCTION Aspirin, …

Results and conclusion for aspirin synthesis

After recrystallisation differences between the crude and purified aspirin were noted. The impure (crude) aspirin was powered and fluffy with small clumps and was slightly yellow in colour whereas the pure aspirin has a less fluffy crystalline powder and was …

Lab on aspirin tablets

Aspirin possesses a number of properties that make it the most recommended drug pretty often. It is an analgesic, which means that it is very effective in pain relief. Being an anti-inflammatory agent, it is also provides some relief from …

Salicylic acid

The purpose of this experiment is to evaluate the percent aspirin on a commercial aspirin tablet using an instrumental method, spectrophotometry. In a spectrophotometer, light from a strong lamp passes through a monochromator, which breaks the light into its component …

Aspirin history and uses

Aspirin is on of the first drugs to ever be commonly used and is still one of the most widely used in the world. How widely used you ask? Approximately 35000 metric tonnes are produced and consumed every year. Chemically …

Aspirin lab report

First, Ethanoic acid was added to the salicylic acid which resulted in a cloudy solution. When adding a few drops of concentrated sulfuric acid, which acted as a catalyst, effervescence transpired and some of the salicylic acid dissolved. Thereafter, the …

Preparation of aspirin and determination of the melting Point

This experiment involved three steps: synthesis of aspirin, isolation and purification, and the estimation of purity of the final product. The synthesis involved the reaction of salicylic acid and acetic anhydride in the presence of a catalyst, phosphoric acid, H3PO4. …

Synthesis of tylenol and aspirin

Abstract Aspirin and Tylenol were synthesized by means of crystallization, recrystallization, and melting point determination. Synthesis produced significantly high percent yields for aspirin, however, produced extremely low and impure percent yields for Tylenol. A second group was also used to …

Synthesis and purification of acetylsalicylic acid

Background Salicylic acid is a phenol as well as a carboxylic acid. It can therefore undergo two different types of esterification reactions, creating an ester either with the hydroxyl or with the acid. In the presence of acetic anhydride, acetylsalicylic …

Myocardial infarction

To treat pain or fever in adults, the recommended dose is 325 mg to 650 mg every 4 to 6 hours as needed. The maximum daily dose is 4,000 mg, unless otherwise directed by your doctor. For adults with conditions …

Aspirin and acetaminophen

EUROPEAN PHARMACOPOEIA 5. 0 Acetylsalicylic acid C. N,N? -diacetyl-L-cystine, D. N,S-diacetyl-L-cysteine. 01/2005:0309 ACETYLSALICYLIC ACID Acidum acetylsalicylicum C9H8O4Mr180. 2 DEFINITION Acetylsalicylic acid contains not less than 99. 5 per cent and not more than the equivalent of 101. 0 per cent …

Synthesis of Aspirin

Purpose: To synthesize aspirin, a common analgesic drug, via nucleophilic acid-catalyzed substitution reaction of salicyclic acid with acetic anhydride. The whole reaction is catalyzed by phosphoric acid. (The experiment involved three parts: The synthesis of aspirin, the isolation and purification …

Characterization of Aspirin

Starting, Material, serves also as the solvent colorless liquid with a smell of acetic acid Molar Mass: 102. 09 g/mol Melting Point: -73. 1 0C Boiling Point: 139. 8 0C Density: 1. 082g/cm3 Corrosive Flammable and Lachrymator which makes eyes …

Preparing of aspirin

I. SynopsisThe synthesis of aspirin is known in organic chemistry as an esterification reaction. In this experiment, preparation of aspirin were conducted and followed by recrystallisation to have it purified. Aspirin was prepared from salicylic acid and acetic anhydride. Concentrated …

The mechanisms actions

The mechanisms actions of non-steroidal anti-inflammatory drugs (NSAIDs) To summarise, non-steroidal anti-inflammatory drugs are drugs which have anti-inflammatory, analgesic and antipyretic properties due to their mechanism and enzymes involved COX-1 and COX-2. However as well as being beneficial NSAIDs have …

Aspirin experiment

INTRODUCTION: Synthesis and use of organic compounds is an extremely important area of modern chemistry. Approximately half of all chemists work with organic chemicals. In everyday life, many if not most of the chemicals you come in contact with are …

Synthesis of aspirin

?Abstract: The purpose of this lab is to synthesise acetylsalicylic acid (aspirin) by creating a reaction between acetic anhydride and salicylic acid. This was be accomplished through the use of recrystallization. Acetic anhydride and salicylic acid are mixed together, and …

English notecards

Senese, Fred. “What is the buffer system in buffered aspirin? ” General Chemistry Online. Fred Senese, 15 Feb. 2010. Web. 30 Mar. 2011. <antoine. frostburg. edu/chem/senese/101/acidbase/faq/buffered-aspirin. shtml>. | Just about any buffering agent used in an antacid can be used …

Preparation of acetylsalicylic acid 1

Abstract Acetylsalicylic acid was prepared using salicylic acid and acetic anhydride. As a result, a white, powdery substance was formed (0. 1931g, percent yield 91. 30%) and was defined by melting point (124. 5 – 134. 5°C) and observation of …

Microscale synthesis of acetylsalicylic acid

Acetylsalicylic acid, or also known as aspirin is known to be a drug that relives people of pain and is commonly used even today. It is synthesized from salicylic acid and ethanoic anhydride, both of small quantities. Phosphoric acid was …

Acetylsalicylic acid

Restatement of experiment: Aspirin (acetylsalicylic acid) is a derivative of salicylic acid with the same medicinal values but fewer side effects. It is used widely as a pain killer and anti-inflammatory. In this experiment, aspirin was synthesized from salicylic acid …

History of aspirin

Aspirin is one of the most commonly used drugs in the world.. For centuries people throughout the world. Aspirin was discovered about 3500 years ago. A collection of 877 medicinal recipes, The Ebers papyrus, before Christ, from the middle of …

Week 6 Assignment Compatible

Please answer the case study questions, showing your work where applicable. Each question is worth 5 points. CASE 1 A patient is prescribed a pain medication with the directions: i tab PO q 12h The patient takes the first dose …

Aspirin Lab

Intro- Aspirin is known as a pain reliever for muscle ache, head ache and can prevent heart attacks as well as blood clots, and many more things that it can help with. Aspirin is known as Acetylsalicylic acid (ASA) is …

Carbohydrates – amino acid

Undergraduate Questions (50 Pts) 1. (4 pts) A chemist working in a pharmaceutical lab synthesized a new drug as a racemic mixture. Why is it important that she separates the two enantiomers and test each for its biological activity? 2. …

Asprin and the stomach

The drug known as aspirin was introduced in Europe in 1899 by a German chemist named Felix Hoffman who developed it as a treatment for his father’s arthritis. To manufacture aspirin Hoffman combined salicylic acid and acetic acid, the result …

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