Ibuprofen, RS-2-(4-isobutylphenyl) propionic acid, is one of the most potent orally active antipyretic, analgesic and non-steroidal anti-inflammatory drug used in the treatment of chronic and acute pain (Bhavik R. Kesur, 2012). Ibuprofen is known to have an antiplatelet effect, though it is relatively mild when compared with aspirin. Its analgesic effect starts after 30 minutes and lasts few hours. Ibuprofen is removed with urine and does not cumulate in human body. Ibuprofen's mechanism of action is to block the production of prostaglandins by marginally inhibiting COX-2 enzyme (Vu Dang Hoang, 2014). Ibuprofen is white to off-white in colour and is a crystalline powder, and is practically insoluble in water, but readily soluble in organic …show more content…
Spectrophotometric methods are described in this paper, the simultaneous determination of paracetamol and ibuprofen using derivatives of the ratio spectra method (Yousry M., 2011), and the determination of Ibuprofen using difference spectroscopy (Hapse S.A, 2011). The objective of this work is to use these methods to establish a straight-forward, rapid and precise method in the analysis of Ibuprofen for undergraduate laboratory practical’s. The second aim of this work is to establish a method to separate pharmacologically active components in over-the-counter medication by solvent extraction. The chosen medication, Excedrin®, contains three active components, aspirin, acetaminophen and caffeine, and a binding material. One tablet contains 250mg of aspirin, 250mg of acetaminophen and 65mg of caffeine. These three compounds in combination are said to be effective against migraine headaches. Aspirin, or acetylsalicylic acid, is an analgesic and an anti-inflammatory and has an important role in preventing cardiovascular disease (Ji Ma, 2017). Caffeine is a stimulant and is the most consumed psychoactive substance in the world. Paracetamol, or acetaminophen is also an analgesic and an antipyretic (Revell, …show more content…
The spectra were smoothed at Δλ=2nm and divided by the smoothed Δλ=2nm of Ibuprofen at 14μg/ml. The second derivative was calculated for the obtained spectra with Δλ=8nm, the results showed that a standard spectrum of 14μg/ml of Ibuprofen is a suitable divisor. As seen in the spectra in Figure 2, there are two maxima, 238.9nm and 241.3nm, and two minima, 244.5 and 246.0nm. The signals at these wavelengths are proportional to the concentration of Paracetamol in the range 2-24μg/ml. 238.9nm was selected for the determination of mixtures and commercial tablets due to the low standard deviation and appropriate mean
However, in this particular experiment, despite this deviation, aspirin, caffeine and acetaminophen compounds were successfully isolated from the analgesic
The difference in this chemical and physical properties will aid in their separation. Processes like solubility, gravitational filtration and recrystallization will be used to separate the substances present in Panacetin. The melting and boiling point of the substances will help in concluding on which of these compounds will be presented at the end of experiment. Procedure and observation The Panacetin content was weighed approximately 3.0493g and transferred to the Erlenmeyer flask; 75ml of dichloromethane (CH¬2CL2) was added to the content. The dichloromethane (CH2Cl2) dissolved the sucrose, leaving the active unknown agent and aspirin behind.
Acetaminophen is a drug that humans take to relieve pain and fever. Typically, if a human is ill then they may take acetaminophen to make them feel better. Commonly acetaminophen is used to treat symptoms like headaches, fevers, muscle aches and backaches. Acetaminophen is medically important to humans because, acetaminophen puts them at ease while people are resting from whatever ailments they have acetaminophen puts them at ease at taking away the pain from the process. On only is acetaminophen important to people on a medical level but, acetaminophen is also important and a financial level.
Physically, the unknown compound was composed of white, grainy, crystal-like structures. The unknown was also odorless. From these observations, various physical and chemical testing was performed to determine properties of the unidentified compound. A series of solubility tests were performed, as shown in Table 2, and revealed that the unknown compound was soluble in water, but not in Acetone or Toluene.
Consistently outweighing those related to natural and semisynthetic opioids, synthetic opioids, methadone, and heroin (Dal Pan, 2016). On the other hand, nonopioid analgesics or NSAID’s like Naproxen or Ibuprofen tend to be the norm for treating mild to moderate nonspecific lower back pain due to anti-inflammatory properties and analgesic properties (Adams
Lab Report 5: Acetylsalicylic Acid (Aspirin) Synthesis Name: Divya Mehta Student #: 139006548 Date Conducted: November 19th 2014 Date Submitted: November 26th 2014 Partner’s Name: Kirsten Matthews Lab Section: Wednesday 2:30 L9 IAs Name: Brittany Doerr Procedure: For the procedure, see lab manual (CH110 Lab Manual, Fall 2014) pages 96-98. Wilfrid Laurier University Chemistry Department. Fall 2014. Acetylsalicylic Acid (Aspirin) Synthesis.
This piece of evidence is not so compelling because the pH levels dropped for all drugs after the HCl was added because stomach acids neutralize the pH levels (“Painkillers & Acid Reflux Symptoms”). The most compelling piece of evidence is the color when we added the iron nitrate. They both turned black when the iron nitrate was added and no other pain reliever looked like those two. Unknown B is Bufferin because they both look like white powders and they were both insoluble. When the universal indicator was added they both turned orange, which indicted their pH level was 5.0.
In this lab, we tested 8 known ingredients to find what ingredients was in our unknown A and unknown B medications. We first tested the water solubility of our knowns and unknowns. We found that of the knowns, cornstarch and acetaminophen were the only ones not water soluble. The unknowns were also not water soluble. Th next test was the pH test.
Aspirin is considered a “polydrug” due to its variety of uses stretching from pain-relief to disease prevention. Salicylic acid is derived from the bark and leaves of the willow tree. Salicylic acid belongs to a group of phytochemicals which have been shown to have positive effects on human health. Salicylic acid is a phenolic compound that can be found in a variety of plants and is a crystal organic carboxylic acid. However, it is more commonly viewed as the primary metabolite and active compound of acetyl salicylic acid, which has been used as an anti-inflammatory drug by physicians for over 100 years.
Although the value of the isolated caffeine is nearly double that of the pure caffeine, it appears that caffeine was separated from Excedrin, but the sample was not pure. It still had other analgesics present. This is concluded from the location
Intro: Separation and purification of an unknown/complex compound can be done by using techniques such as liquid-liquid extraction, solid-liquid extraction, recrystallization, melting point, and thin layer chromatography. In this experiment, these techniques were used to separate excedrin’s components containing caffeine, excedrin, and acetaminophen, Each component has its own chemical properties and characteristics such as polarity, reactivity, and solubility. Knowing how to separate and purify compounds from each other is an important skill within in a lab setting. A few techniques for first initially separating compounds apart are liquid-liquid extraction and solid liquid extraction. Liquid-Liquid extraction involves using a seperatory funnel and release on varying solubities and different solids in immiscible solvents.
Introduction According to the American Medical Association, infants and children may experience a heightened pain stimulus as a result of stronger inflammatory response and lack of central inhibitory influence. Data collected from the Netherlands, United Kingdom, and Italy show that analgesics are one of the most commonly prescribed drug classes in children and adolescents (Fredheim, 2010). Analgesics are also known as painkillers, and include the group of opioids. Opioids are defined as any morphine-like synthetic narcotic that produces the same effects as drugs derived from the opium poppy.
The results were an indicative for expected IR spectrum of pure phenacetin. The IR spectrum showed peaks at (3281.67 cm-1) which indicate the presence of the N=H stretch, (3131.40 cm-1 and 3073.97 cm-1) representing the Sp2 C-H stretches, (2982.26 cm-1, 2927.60 cm-1 and 2885.53 cm-1) expressing the Sp3 C-H stretches, also (1656.82 cm-1) indicating the C =O amide stretch, and finally a wavelength at (1603.51 cm-1) representing the aromatic C =C stretch of the phenacetin molecule, respectively. Such IR spectrum results from phenacetin in comparison with an acetaminophen IR spectrum clearly showed the elimination of the hydroxide (OH) bond present at the acetaminophen molecular structure, which resulted in the IR spectrum not indicating the presence of a strong and broad (alcohol-phenol) band at about 3500 cm-1
12. The in vivo pharmacokinetic study suggests that the optimized formula F18 developed in this work may be useful for the treatment of acute migraine attack due to the enhanced dissolution rate and by passing hepatic first pass metabolism through the partial absorption from buccal mucosa. 13. Based on these results, it could be concluded that a promising quickly absorbed liquisolid orodispersible tablets of Zolmitriptan were successfully designed for treatment of acute migraine attack. Nevertheless, due to small number of the volunteers recruited in this study, the results can only be considered as a preliminary, and the effectiveness of the optimized (F18) should be clinically studied with a larger number of volunteers to confirm its clinical
Decomposition of Aspirin Studied with UV/Visible Absorption Spectroscopy Aims: To determine the concentration of salicylic acid, formed from the hydrolysis of Aspirin, at regular intervals using the UV/Visible Absorption Spectroscopy From the concentration of salicylic acid, concentration of Aspirin to be determined using an equation Calculate the rate constant of this reaction and its order from a plot of graph of ln(aspirin) vs time Discuss the overall flaws and improvements to the experiment Results: As per schedule1, 0.212g of aspirin was added to 50 ml boiling water to form salicylic acid in a 100 ml flask, of which 1 ml was then pipetted to a 50 ml volumetric flask at the 5th min. Following an ice bath, the solution was mixed