Domperidone Maleate Case Study

risperidone whereas in this one there was a fixed dose to limit breach in blinding and to facilitate comparison between similar groups, also having this fixed dosage helped prevent bias because when using a titrating schedule of dosing in a randomized trial, it tends to show bias toward a desired goal. Risperidone in this study was well tolerated and there weren’t significant differences in weight gain or sedation(13). One of the main things disliked about risperidone is its tendency to increase the incidence of dyskinesia and other extrapyramidal side effects. In this study only mild and transient dyskinesias were seen in only 3 children, however that could be due to the low fixed dosage(13) of the study.

Every individual is different in a specific way. Like people, substances have unique qualities, such as properties, which aid chemists to differentiate and identify the particular components the substances consists of. These particular qualities are identified as either physical or chemical properties. Physical properties are properties which do not require a chemical change of its composition in order for the substance to be classified. A few examples of physical properties include color, density, odor, boiling point, melting

As indicated in Table 1, each of the given substances for this lab were soluble in ethyl acetate. However, the solubility results varied based on the structure of each tested compound. 4-bromoacetanilide and fluorene are both insoluble within solvents of HCl and NaOH. Fluorene will stay soluble within the organic layer since its is a purely made of carbon and hydrogen. 4-bromoacetanilide will act similarly given its nonpolarity from balanced branches and lack of acid/basic characteristics. 4-nitroaniline and 2,5-dichloroaniline travel solubly into the HCl/H2O solvent when added to the separatory funnel, yet form a precipitate after a highly concentrated NaOH is added. Both 4-nitroaniline and 2,5-dichloroaniline are slightly basic organic compounds, and when an acid (HCl) is added a proton will transferred to make them ionic. In their ionic state, both compounds become water-soluble. When NaOH is added to 4-nitroaniline and 2,5-dichloroaniline, it removes the proton causing the compounds to become insoluble in water once again. The same concept can be applied in an opposite fashion to the acid organic compounds of 3-chlorobenzoic acid and resorcinol; both become water-soluble when they lose a proton after mixed with NaOH. They go back to their water insolubility if you add an acid to donate a proton back to 3-chlorobenzoic acid and resorcinol. Therefore, after completing this lab,

Benzophenone was soluble in methyl alcohol whiles biphenyl was partially soluble. Benzophenone and biphenyl are both nonpolar molecules. Methanol is intermediately polar, allowing both nonpolar molecules to be dissolved as it is not too polar or nonpolar. However, biphenyl is less polar than benzophenone. Since methyl alcohol is somewhat polar, the more polar benzophenone is more soluble in methyl alcohol than biphenyl. Also, benzophenone can make hydrogen bonds. Thus, benzophenone is more soluble in methyl alcohol than

Sucrose is insoluble in the organic solvent dichloromethane (CH2 Cl2). Aspirin, acetanilide, and phenacetin are soluble in dichloromethane but relatively soluble in water. Aspirin reacts with bases such as sodium bicarbonate to form a salt, sodium acetylsalicylate, which is insoluble in water. Acetanilide and phenacetin are not converted into salts by sodium bicarbonate.

Solids are composed of atoms, ions or molecules arranged in a pattern that is represented in three dimensions, they all have a definite shape and volume, they are virtually incompressible and they do not flow readily.

Ionic compounds are soluble in water to a certain point depending on the compound. The level of solubility changes among different compounds. Some ionic compounds can completely dissolve in water and appear to be a homogeneous mixture. Although, some ionic compounds dissolve very little, and could be considered insoluble, since it does not dissolve fully. Depending on the compound, the level of solubility can be high or low. However, ionic compounds could dissolve to a certain degree. If the solution appears to be a heterogeneous mixture, many may assume through visual representation that it may be insoluble. As stated previously, the smallest amount of solubility should be considered. To confirm whether or not the substance is soluble, observe the efficiency when conducting electricity. Due to practical reasons, the slightest solubility could be considered insoluble by people.

0 – no level of dissolution taken place where the shape and texture of the panadol has not been altered since immersion in the solvent

Physiological Changes Due to Risperdal Hallucinations, delusions, paranoia, psychosis and thought disorder are all symptoms of Schizophrenia and people who suffer from these symptoms seek the treatment of atypical anti-psychotic medications. Those medicines include Risperidone (Risperdal), Clozapine (Clozaril) , Ziprasidone (Geodon) and Quetiapine(Seroquel). The purpose of these medications is to alleviate symptoms of Schizophrenia and lessen the chances of a recurrence. The basic function of Atypical Antipsychotics is to reduce the effects of blockage in the dopamine receptors and serotonin and allow communication between nerve cells. Dopamine is thought to be relevant in Schizophrenic symptoms and

2) Explain the trend in the solubility of the three alcohols in water. (In your discussions, bring out the theoretical concepts on which

Risperdal (Risperidone) has been used for a number of different mental health disorders. It has been used for Schizophrenia, Bipolar I disorder, and to help with irritability in children with Autism. There are a number of different things that will be covered in this paper such as the chemical makeup of the medication, the appearance, side effects, off label use, side effects, administration, and how it works, with other additional information.

Risperidone has been utilized as an atypical antipsychotic and prescribed since 1994. It is mainly used for treatment in those with schizophrenia, bipolar disorder, attention deficit hyperactivity disorder, and irritability in autism spectrum disorder. Risperidone has multiple types of administration and the most common is oral tablet form. This can be used in adults or adolescents, but is closely monitored when used with children. The side effects for Risperidone should be taken into consideration by both prescribers and prescribed. Finally, Risperidone should not be used while pregnant or nursing due to potential side effects carried from mother to child. This second generation antipsychotic has been used for many years and will continue to be prescribed in practice.

Solubility – Very soluble (water), Freely soluble (methylene chloride, chloroform, alcohol), Slightly soluble (acetone) and Insoluble (ether).6 Melting point - 120°C or 248°F.5

I can narrow down my unknown substance to either Ethanol or 2-proponal. Ethanol’s density is only 0.001g/mL higher than my own measurements, but its boiling point is 8.4̊C lower than GNR’s. Whereas 2-proponal’s density is off by 0.003g/mL and its boiling point is only off by 4.5̊C. If I were to make an educated guess I would lean more towards Ethanol. Both the precision and accuracy of my data was far greater in density than in boiling point and Ethanol’s density is closer to GNR’s than any other substance.

As mentioned in the discussion, olive oil, vegetable oil, crisco, and lard were soluble in nonpolar solvents and insoluble in polar solvents. This is due to the chemical composition of polar and nonpolar substances which results from the molecular shape as well as properties of dissolving solutes in solution. Polar substances are hydrophilic and contain polar Van Der Waals interactions (intermolecular forces) such as dipole-dipole forces, ion-dipole forces, and hydrogen bonding. Nonpolar substances are hydrophobic and contain non-polar Van Der Waals interactions. ‘Like dissolve like’ is the reason only polar solutes dissolve in polar solvents and why nonpolar solutes dissolve in nonpolar solvents. Molecules with similar polarity have similar intermolecular forces and therefore, can interact with each, or in this case dissolve9. Additionally, the solubility of a compound is determined by the length of the hydrocarbon chain. Long hydrocarbon chains such as the one found in oleic acid makes a compound more insoluble10. Therefore, since the lipids used in this experiment were hydrophobic substances and each lipid has long hydrocarbon chains, the results were consistent with the scientific literature and principles.