Он 3 Он NH2 threonine

Q: Draw the Fischer projections (D-isomer) of Arabinose and Mannose.  Draw the Haworth projections of…

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Q: 1) Identify the relationship between the following molecules: HO a) enantiomers b) diastereomers c)…

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Q: meso-Tartaric acid is اخترأحد الخيارات a. always optically inactive b. sometimes optically inactive…

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Q: There are four d-aldopentoses (Table 25.1). If each is reduced with NaBH4, which yield optically…

A: The four aldopentoses are D-Ribose, D-Arabinose, D-Xylose and D-Lyxose. When these aldopentoses are…

Q: b How many chiral carbon atoms are there in the following sugar? OH O 2 carbon atom(s) How many…

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Q: 2) Part 1: Draw D-glucose in its proper Fischer Projection (using the template below). Part 2: Draw…

A: Given

Q: 2. What is the relationship between (S)-proline and (R)-proline? What about…

A: Since you have asked multiple questions, we will solve the first question for you. if you want any…

Q: 9. Which is achiral? CHO CHO CHO CH2OH 10. Which is an enantiomer of GUM? но OH OH но H- OH HO H -…

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Q: Draw the Fischer projections of the four aldotetroses. Draw the D-sugar on the left and its L-isomer…

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Q: stereoisomers of 2,3-diaminosuccinic acid How many are there? Draw all possible starvoisomers NH₂…

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Q: What is the total number of stereoisomers? CI 1

A: Answer

Q: 1.3 How many stereogenic centres does the cholesterol have? A. 5 но В. 6 С. 7 cholesterol D. 8

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Q: Consider alanine a. How many chiral centers? b. How many stereoisomers? c. Draw the fischer…

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Q: Proline is an unusual amino acid because its N atom on the α carbon ispart of a five-membered ring.…

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Q: Proline is an unusual amino acid because its N atom on the α carbon is part of a five-membered…

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Q: Proline is an unusual amino acid because its N atom on the a carbon is part of a five-membered ring.…

A: Enatiomers are isomers which forms non-superimpossible mirror images. If configuration of one…

Q: The [a] of pure quinine, an antimalarial drug, is -165. If a solution contains 82% quinine and 18%…

A: The observed optical rotation α can be found out using the formula,  ee=observed optical…

Q: H;C-CH,-C-0–CH3 a) What are all of the IMFS present in molecule A? b) What are all of the IMFS…

A: We have to tell the types of intermolecular forces present in both molecules and tell the relation…

Q: If a mixture has an ee of 90%, what is the percentage of each enantiomer? Multiple Choice 80% : 20%…

A: Explanation: The enantiomeric excess (ee) shows how much more of one enantiomer is present in the…

Q: CH2OH H- HO- Но- -H- H- -ОН CH2OH D-Sorbose

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Q: Which of the following compounds are not volatile? a. abscisic acid b. monoterpenes c.…

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Q: Describe how the following anticoagulants prevent clotting.             a.) Sodium or lithium…

A: How the following anticoagulants prevent clotting is given below.

Q: 1. Differentiate hydrolysable from non hydrolysable tannins.    Hydrolysable         Non…

A: Tannins are complex organic compounds which are found in many species of plants. They are secondary…

Q: What is the active form (structure) of doxorubicin *write the structure legibly

A: The above structure is a best example of the fused ring structure with multiple hydroxyl group and…

Q: Hello good morning, we only saw very little of this topic and I did not understand it and this was…

A: Given the [α] value of pure S-enantiomer = +24 Observed  [α] value = +10

Q: CH OPP CH3 CH2 H3C CH3 CH3 H3C. CH3

A: Please find the mechanism below.

Q: On the templates, draw a Haworth projection of the a-isomer and ß-isomer of the sugar shown. (b)…

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Q: 23. How many stereogenic centers are present in the following compound? он A) 1 B) 2 C) 3 D) 4 24.…

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Q: 3. Identify the LG and then determine if it is a good or bad LG. rоснз FỌCH3 -ОН2 ОН2 good or bad…

A: Leaving group in all the three cases are as follows :

Q: Would you expect hemiacetals to be stable in basic solutions? Explain your answer.

A: Addition of an alcohol to aldehyde is referred to as Hemiacetal. It means half can say one alcohol…

Q: (iv) Re-draw the amino acid below in a Fischer projection. H2N но, Me

A: The Wedge dash is converted  to fischer in such a way that most oxidized  group at  top and most…

Q: The specific rotation, [a]D, for (+)-alanine is +8.5. What is the observed rotation for a solution…

A: we have to calculate the specific rotation and observed rotation

Q: Consider this molecule drawn in a Fischer projection: H3C. OH H3C но It is R and the -OH is the…

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Q: Draw a molecule of 4-amino-3-phenylhexa-2,4-dien-1-ol

A: Draw a molecule of 4-amino-3-phenylhexa-2,4-dien-1-ol ?

Q: 1. NaOCH2CH3 2) CH3CH2CH2CI (1 equiv) Select to Draw H3O* heat

A: GIVEN:-

Q: 3. How many stereogenic centres does the cholesterol have? А. 5 но В. 6 C. 7 cholesterol D. 8

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Q: Explain why adding D20 to an alcohol or carboxylic acid makes the-OH peak disappear.

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Threonine, an amino acid, has four stereoisomers. The stereoisomer found in nature is…

A: Configurations of the given structures obtained by the CIP rules  are:

Q: On the templates, draw a Haworth projection of the a-isomer and B-isomer of the sugar shown. (b)…

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Q: N-H • You do not have to consider stereochemistry. • All carboxyl and amino groups should be drawn…

A: Carbonyl center acts as electrophilic center at which nucleophilic addition reaction occur.

Q: The wrong statement regarding tartaric : acid is It has a total of four stereoisomers It has a total…

A: *. Tartaric acid have total 4 isomer but out of which two.are same so it has total 3 steroisomer *.…

Q: Draw the Fischer projection for D-sorbitol.

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Q: a: Assign the absolute configuration of all chiral centers in molecules B and C by writing R or S…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: Label each statement as true or false H2CH32 is the conjugate base of CH3CH2+

A: According to the explanations by Bronsted-Lowry, if a species loses a proton then it is an acid…

Q: 5. The enantiomers of 1-amino-2-propanol were separated and recovered as their hydrochloride salts:…

A: a. Streochemical formula for the both isomers are shown as below: b.The enantiomers can rotate the…

Q: (b) The optical rotation of a- and B-anomers of D-glucose are [a]p = +112.2° and [a]p = +18.7°, %3D…

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Q: Threonine is a naturally occurring amino acid that has two stereogenic centers. a. Draw the four…

A: a) The four stereoisomers of threonine are -

Q: 6. For the following molecule a. Provide the R or S stereochemistry for each chiral carbon. b. How…

A: Interpretation: For the given molecule, a) The R or S stereochemistry for each chiral carbon is to…

NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.