A natural products chemist isolated the sphingolipids shown at the right(alpha-GalCerBf) as the mixture of compounds that differed in their chain lengths. The structures shown, including the branching pattern, were determined NMR.   The table below includes the found high-resolution masses of the three major isomers (negative mode,{M-H}-). Fill in the calcualted masses and the error ppm.

Q: Why is it better to acquire the 1H-NMR spectrum in DMSO-d6 and not in CDCl3?

A: Solution: We know DMSO is a highly polar solvent and hydrophilic one. So as principle of solubility…

Q: the [M+ 2] + Peak be the most useful in the MS analysis of which compound? •) bromo aminoindane 1)…

A: The relative intensity of elements is as  O18 = 0.2 % Cl37 = 32 % Br81 = 97 %

Q: None

A: Significance of the Mass ErrorThe mass error in ppm is a crucial parameter in mass spectrometry as…

Q: All ethyl esters of long-chain aliphatic acids (for example, ethyl tetradecanoate, C13H27COOCH2CH3)…

A: There are various ways to form fragments in mass spectrometry-  1- alpha cleavage 2- heterolytic…

Q: Identify the fragments of 1-bromohexane in the mass spectrum

A: Lone pair of electrons on halogen are the most loosely bound electrons. After removal of one of the…

Q: Please explain the peaks of this mass spectrometry of N-phenyl-acetamide.

A: Mass spectrometry (MS):  The analytical technique of mass spectrometry (MS) is used to determine the…

Q: Explain why this is correct. Also explain what a chromophore is and what is its distinigusiing…

A: Thin layer chromatography (TLC) is a method of separating components of the mixture. It is based on…

Q: r. Waybell designs a study to investigate whether the dose of melatonin taken before bed impacts…

A:

Q: 1. An ester (MW=136) give a Mass spectrum (E.I.) as following. Please deduce the structure of this…

A: Let's analyze the mass spectrum of the ester with a molecular weight of 136.Mass Spectrum Graph:The…

Q: Draw the fragmentation arrow-pushing mechanisms to form the significant fragments of…

A: A question based on Mass spectrum that is to be accomplished.

Q: 100 HS-NU-SS06 80 40 20 10 20 30 40 50 60 70 80 90 100 110 120 m/z Relative Intensity

A: The natural abundance of 13C is 1.1%. The number of carbon atoms present in the given molecule can…

Q: Insert the letter assigned to each molecule into the appropriate "Spectrum #". of & lx B Spectrum…

A:

Q: whats the stracures of C6H11NO2 in HNMR spectrascupe

A: The above question is based on structure elucidation of organic compound through 1H NMR spectroscopy…

Q: Given that K, is 7.5x10-3 (aq) for R-NH3* (aq) + H20(1) R-NH2(aq) + H3O* (where R - is a carbon…

A: Given :: Ka = 7.5×10-3 pkb = ?

Q: Identify the main peaks for a mass spectrum of the compound in the attachment

A: The given mass spectrum of 2-chloropropane is :

Q: Time (min) Which separation is better? What can cause this behaviour (if all other conditions are…

A: To explain which separation is better.

Q: D.CoHol?)>Cesyt Hz cqj e PBrg (2) > Py (s) + Brzli) e.

A:

Q: The zoom scan of the positive ion ESI-MS spectrum of bradykinin shows resolved isotope peaks. For…

A: The objective of this question is to calculate the mass value of Bradykinin. It is a 9-amino acid…

Q: 2) Part of the 'H NMR spectrum for a dipeptide recorded in D₂O is shown below. The signal for the CH…

A: When molecules are placed in a strong magnetic field, the nuclei of some atoms will begin to behave…

Q: Mass spectral analysis gave the isotope cluster shown below. Calculate the molecular weight of the…

A: Molecular weight of the fragment is the m/z value at which the relative abundance is highest.

Q: 100 A 11 10 HSP-03-401 3000 9 8 2 N 7 6 Myndrom 5 ppm 2 1500 4 3 1 N. 2 3 at -O 540 Page F C₂H12O₂ >…

A: The question is based on the concept of organic spectroscopy.   we have been given spectroscopic…

Q: Using the mass spectrum below select the most likely fragment peak at 57: Relative Intensity 100 80…

A: We need to find the molar mass of each of the options given. mz=molar mass of the fragmentcharge of…

Q: Given your choice of mass spec sources: EI, CI, laser ionization, SIMS, MALDI, and electrospray, and…

A: NOTE

Q: What is the reactant and the desired product? If you were looking at both of the IR spectrum, where…

A: Given: Reaction of cyclohexene basic potassium permangnate to form adipic acid.  To find: The…

Q: 100 H3C 80 60 40 CH3 H3C 20 H3C H;c+ 0.0- 0.0 15 30 45 60 75 90 m/z Figure 3. Positive ion mass…

A: Mass spectrum is an important spectroscopy method to determine the structure of molecule. It…

Q: Since the structure is of 4-methylpropiophenone, would I be able to ask how these signals at 133 and…

A:

Q: Cuvette 1 2 3 4 Dye Percent Concentration Dye (MM) 100% 75% 50% 25% T 1 Yellow Dye Red Dye…

A: Let us assume the total dye solution after dilution have volume of 100 mL. Initial concentration of…

Q: D HIT-NO-2519 SCORE= SALICYLAMIDE C₂H₂NO₂ 4000 3000 3397 9 2640 64 3191 13 3096 52 1674 3061 49 2793…

A: The question is based on the concept of organic spectroscopy. We need to analyse the spectral data.

Q: Find the IHD and fragment/cleavage

A: The structure of the unknown molecule can be affirmed by analyzing the spectroscopical results such…

Q: %Transmittance 105 100 95- 90 85 80 75 70 65 60- 55- 50 45- 40 35- 30- 25 20 15- 10 50 3600 0000…

A: The question is based on the concept of organic spectroscopy. We need to analyse the spectral data…

Q: 3) D

A: Infrared spectroscopy is useful to distinguish between compounds having different functional groups.…

Q: Which of the following compounds matches the given data? MS: base peak = 71 Mt= 105 ; M+2 = 107…

A: Identification of the given unknown compound using spectral data as follows. Isotopes: atoms having…

Q: Which polymer best corresponds to the IR spectrum? 100 ความ 4000 3000 O Teflon www PVC (polyvinyl…

A: The principle of IR (infrared) spectroscopy is based on the fact that different chemical bonds in a…

Q: A) Identify the molecular ion peak and the base peak. m/z of molecular ion peak m/z of base peak B)…

A: It is a spectroscopic technique used for the determination of the mass to charge ratio of a…

Q: The glucose concontrations in a patent with midy clevated glucose loves were delomned by a…

A:

Q: All methyl esters of long-chain aliphatic acids (e.g., methyl tetradecanoate, C13H27COOCH3) show…

A:

Q: (b) Provide a mechanism for the coupling of Boc-Gly-OH with H-Phe- O'Bu using EDCI, DMAP and Hünig's…

A: Carboxylic acid react with EDCl DMAP react with product of carboxylic acid of EDCl Nucleophilic of…

Q: Chromatogram uV 30000000- 20000000- 10000000- 0- 0.5 0.97 1.0 1.5 1.72 2.0 2.5 SFID1 min

A: Gas chromatography is a method of separating and identifying components of a mixture. It depends on…

Q: Which compound will have the larges Rfin the TLC plate?

A:

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.