The average contents (±SD) of kaurenoic acid in the Araliae Continentalis Radix extract powder were estimated as 1.147±0.008 mg in 1.0054 g‚ usual dose of Araliae Continentalis Radix. Quantification of kaurenoic acid UPLC–MS/MS has been emerging as a powerful analytical technique for the determination of analyte in biological samples to improve sensitivity and selectivity. Herein‚ we developed a simple‚ selective‚ and sensitive bioanalytical UPLC-MS/MS method for the quantification of kaurenoic
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ligand must be created first which requires the use of 3‚5-di-tert-butyl-salicylaldehyde . There are many methods by which this salicylaldehyde can be synthesized but one method with a relatively high yield starts with 2‚4-di-tert-butylphenol. The reaction scheme is shown below in Figure 1. 1 2 3 Figure 1: (1) 2‚4-di-tert-butylphenol ‚(2) 2‚4-di-tert-butyl-6-hydroxymethylphenol‚ (3) 3‚5-di-tert-butyl-salicylaldehyde shown above. In this reaction (1) was reacted
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In the IUPAC system of nomenclature‚ functional groups are normally designated in one of two ways. The presence of the function may be indicated by a characteristic suffix and a location number. This is common for the carbon-carbon double and triple bonds which have the respective suffixes ene and yne. Halogens‚ on the other hand‚ do not have a suffix and are named as substituents‚ for example: (CH3)2C=CHCHClCH3 is 4-chloro-2-methyl-2-pentene. If you are uncertain about the IUPAC rules for nomenclature
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Organic Chemistry: CHP 225 Thomas Hsieh Experiment 2: Boiling Points o Date experiment was performed: September 16‚ 2011 o Objective: To determine the boiling point of organic compounds such as tert-butyl alcohol‚ sec-butyl alcohol‚ n-butyl alcohol‚ and an unknown. o Principle: Boiling point is the temperature at which gas and liquid phases coexist in equilibrium. At this temperature‚ the vaporization rate and the condensation rate are equal. The liquid and vapor reach a state of dynamic
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(Confirms if phenol compound) Reagent: aqueous neutral KMnO4 Observation: purple color( brown color (formation of quinone) Procedure: 3 drops phenol soln on test tube+ 1 drop aqueous neutral KMnO4‚ observe decolorizaton Reaction with Ferric Chloride (Confirms if phenol compound) Reagent: FeCL3 solution Observation: Complex formation (deep colored compounds) Procedure: 3 drops of phenol soln in test tube + 1 drop FeCl3 soln Aliphatic and Aromatic Hydrocarbons/ Alkenes Bromination in
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Richard F. Daley and Sally J. Daley www.ochem4free.com Organic Chemistry Chapter 2 Introduction to Organic Nomenclature and Functional Groups 2.1 Drawing Organic Structures 73 2.2 Alkanes 77 2.3 Structural Isomerism 77 2.4 IUPAC Nomenclature 79 2.5 Naming Alkanes 80 2.6 Naming Cycloalkanes 87 2.7 Naming Complex Alkyl Groups 2.8 Functional Groups 97 2.9 Naming Alkenes and Alkynes 2.10 Naming Alkenes‚ Part II 108 2.11 Arenes 109 2.12 Organohalogens 113 2.13 Using Molecular
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Steam Distillation of Lemongrass Oil I. Introduction When a mixture of cyclohexane and toluene is distilled‚ the boiling point of these two miscible liquids is between the boiling points of each of the pure components. By contrast‚ if a mixture of benzene and water (Immiscible liquids) is distilled‚ the boiling point of the mixture will be found below the boiling point of each pure component. Since the two liquids are essentially insoluble in each other‚ the benzene molecules in a droplet of
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Organic Chemistry I Spring 2013 Practice test 1. Name the following compounds: a. 5-tert-butyl-7-isopropyl-6-sec-butyl-undecane b. cis-2-(5‚6-dimethylheptyl)-6-(3-methylpentyl)piperidine c. trans -2-nonyl-3-octyl-tetrahydrofuran d. trans-1‚6-dimethylbicyclo[4.3.0]nonane e. cis-6‚8-ditert-butylspiro[3.5]nonane f. 1‚6-dimethylcyclohexene g. (Z)-3-bromo-4-fluoro-5-methyl-oct-4-ene h. (E)-8-(1-chloroethyl)nonadec-8-ene 2. Draw the structures of the following compounds: a b e c
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When butane’s dihedral angle was at 0⁰ and 360‚ the conformations are at an Emax. This means that the two methyl groups are eclipsed. At 60⁰ and 300⁰‚ which have gauche conformations‚ the methyl groups are more shifted and the potential energy difference is 18.2 kj/mol. At 120⁰ and 240⁰‚ eclipsed again‚ the energy rises to -4.6788 kj/mol‚ from its previous -17.721 kj/mol‚ the hydrogens can be found lying on the same plane‚ increasing the energy. Yet‚ the energy is not as high as it is at 0⁰ and 360⁰
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to us for help in understanding the solution NCERT/CBSE CHEMISTRY CLASS 12 textbook http://www.TutorBreeze.com Contact for Online Tutoring in Physics‚ Math‚ Chemistry‚ English (x) 2-Methyl-1-propene to 2-chloro-2-methylpropane:- (xi) Ethyl chloride to propanoic acid :- (xii) But-1-ene to n-butyliodide :- (xiii) 2-Chloropropane to 1-propanol :- (xiv) Isopropyl alcohol to iodoform :- ©TutorBreeze.com Please do not copy the answer given here Write to us for help in understanding the
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