labeled compounds are most common in clinical settings. Given the relatively high cost of 123I as a cyclotron-produced radioisotope‚ the use of radiotracers using 123I is limited as compared to 99mTc labeled compounds. 99mTc-hexamethyl propylene amine oxime (99mTc-HMPAO) and 99mTc-ethyl cysteine dimer (99mTc-ECD) are the 99mTc labeled compounds used as perfusion retention radiotracers. The commercialization of kits of HMPAO and ECD facilitates the labeling with 99mTc‚ which is a low-cost radioisotope
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classified as “Group I carcinogens” by IARC have been reported to occur in mainstream cigarette smoke. The other 35 have never been reported to occur in cigarette smoke. The nine agents reported are benzene‚ cadmium‚ arsenic‚ nickel‚ chromium‚ 2-naphthyl-amine‚ vinyl chloride‚ 4-aminobiphenyl and beryllium. The reported yields of each of these nine agents in mainstream smoke varies widely. The range of yields reported for a given compound is influenced by the type of cigarette tested and when the analysis
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Compiled SCH4U Course Review Unit 1: Atomic Structure and Bonding Section 3.3 Electron Configurations and Periodic Trends (pg. 139-157) Feb. 11 For single electron system all orbitals with the same value of have the same energy Atoms with more than 1 electron with the same value of n have different energies (sublevels) Because of interactions between additional electrons All orbitals within a sublevel have the same energy The Fourth Quantum Number: A property of the electron (spin quantum
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acetamide which also maintained ortho and para position but slowed down the rate of reaction (equation 2). Slow reaction rate would increase the possibility of obtaining the para-position product (equation 3). The acetamide can be hydrolyzed back to the amine (equation 4). This strategy of protection and deprotection is a very important tool in organic chemistry‚ especially in multi-step synthesis. Equation 1: [pic] Equation 2: [pic] Equation 3:
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- A reaction has occurred if there’s a change in color. The nature of the substituent‚ whether electron-donating to the ring or electron-withdrawing from the ring‚ was responsible for the reactivity of the benzene. Aniline and acetanilide contain amine groups‚ which are electron-donating. Chlorobenzene contains chlorine‚ which is electron-withdrawing. Phenol contains a hydroxyl group. Oxygen‚ being electronegative‚ was suspected to be electron-withdrawing and hence it took longer time for the bromine
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EXPERIMENT NO. 6 LIPIDS I NUR 4 GROUP 9 POLICARPIO‚ JOHN PAUL (A & B) QUERUBIN‚ KIMBERLY (C & D) QUILALA‚ REGENE (E & F1) RAMOS‚ PRACCEDES (F2a & F2b) SABALDICCA‚ VENZ (F2c & F2d) INTRODUCTION Lipids are organic compounds found in living organisms that are insoluble or slightly soluble in water but soluble in non-polar organic solvents. Lipids can be classified into four groups which are -fats‚ oils‚ and waxes‚ -compound lipids‚ -steroids‚ and -derived lipids. Various
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Appendix APPENDIX 1 Chemical tests for functional groups Homologous series/ Typical compound Functional group(s) Alkanes CH3CH3 ethane C – C and C–H Alkenes CH2 = CH2 ethene C=C Chemical tests/Observations Add liquid bromine in ultraviolet light (or sunlight): White fumes of HBr liberated; decolourisation of bromine occurs slowly (a) Add Br2 in CCl4 at room temperature: Decolourisation of bromine occurs immediately CH2 = CH2 + Br2 → CH2BrCH2Br (b) Add acidified
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functional groups in each of the following molecules: O C NH2 H N O C OH H C CH2 (a) (b) O (c) Solutions: a. b. c. d. Amide‚ double bond Amine‚ carboxylic acid Double bond‚ ketone‚ ester O OCH3 (d) CH2OH Aromatic ring‚ double bond‚ alcohol (a) Alcohol (d) Amine (b) Aromatic ring (e) both ketone and amine (c) Carboxylic acid (f) two double bonds 3.2 Propose structures for simple molecules that contain the following functional groups: Solutions: (a). H 3C CH3
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Lab 3: Solubility of Organic Compounds Objectives: Understanding the relative solubility of organic compounds in various solvents. Exploration of the effect of polar groups on a nonpolar hydrocarbon skeleton. Introduction: The solubility of a solute (a dissolved substance) in a solvent (the dissolving medium) is the most important chemical principle underlying three major techniques you will study in the organic chemistry laboratory: crystallization‚ extraction‚ and chromatography.
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Journal of Thermal Analysis and Calorimetry‚ Vol. 94 (2008) 1‚ 75–81 FUNGICIDAL AND BACTERICIDAL ACTIVITY OF METAL DIETHYLDITHIOCARBAMATE FUNGICIDES Synthesis and characterization H. S. Rathore1‚ K. Ishratullah2‚ C. Varshney1‚ G. Varshney1 and S. C. Mojumdar3‚4* 1 2 Department of Applied Chemistry‚ Z. H. College of Engineering and Technology‚ Aligarh Muslim University‚ Aligarh 202002 India Indian Institute of Chemical Technology‚ Uppal Road‚ Hyderabad 500007‚ India 3 Department of Chemical
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