Keppra (shown below) is a pharmaceutical used to treat seizures (epilepsy). How many asymmetric centers are present in this structure? NH2 'N'

Q: The molecule shown below is a naturally occurring organic molecule that has antibiotic activity. How…

A: A chirality center is a carbon attached to four different atoms/groups.

Q: Indicate which atoms in the following compound are chiral centers. H3C. HO H3C CH2 (Provide a list…

A: The carbon atoms which are attached to 4 different atoms or groups are referred to as chiral atoms.…

Q: 3. Drawn below is the structure of Crestor® (rosuvastatin), a medication used to reduce cholesterol.…

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Q: F How many asymmetric centers are present in this structure? F OH ZI N OH

A: In this question, we have to find the number of chiral centre and number of possible stereoisomer in…

Q: H₂N IZ ...m 0= ОН Н

A: Given are two organic compounds.Stereocenter is carbon that have four different groups attached.It…

Q: Он

A: Carbon atoms which are sp3 hybridized and have four different valencies attached to it , are known…

Q: NH2 Br ОН HS How many chiral centers do each molecules possess? How many stereoisomers of each…

A: Chiral center is carbon that have four different groups attached.  And we have formula to find out…

Q: Identify the configuration of the chiral centre: (R) or (S). OH H3CO O There is no chiral centre. OS…

A: Rules to assign R and S nomenclature 1)The four atoms or group attached to chiral centre are given…

Q: Diastereomers are a type of a stereoisomer. Diastereomerism occurs when two or more stereoisomers of…

A: Diasteriomers are a of type of sterioisomer. Diasteriomers occur when two or more sterioisomers of a…

Q: How many tetrahedral stereocenters are present in this compound? OH сH CH CHCHCHCHCH CH CH2CH

A: In order for a carbon center to have the tetrahedral geometry, the carbon center must be Sp3…

Q: 4. How many chiral/achiral centers present in the given structure? i) Br HO NH₂ Chiral OH ii) HỌ HO…

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Q: 7 For the following compound with two chiral centers assign 'R' and 'S' configurations. Draw…

A: Enantiomers: Optical isomers which are the mirror images of each other. They have opposite…

Q: 10. Determine whether each compound is chiral or Achiral

A: The molecule which do not contain either plane of symmetry or centre of symmetry is chiral.Infact to…

Q: 3. Assign R or S stereochemistry to each of the chiral centers in the molecules below. H3C OH Br CI…

A: In the first step, we assign the substituents priority order based on CIP rules.The priority is…

Q: The configuration for the enantiomer shown above is     a.    R     b.    S

A: To determine R/S configuration of chiral ( asymmetric) carbon , we use Cahn-Ingold-Prelog (CIP)…

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: 1. A) Starting with the following line angle structure, convert the structure to a Fischer…

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Q: 3A. and 3F.

A: 1. Enantiomers : Nonsuperimposable mirror images are called " enantiomers "   if we go from one…

Q: The following molecule, 3,17-B-estradiol, is the most physically active estrogen and is widely used…

A: Chiral centres are those carbon atoms which are sp3 hybridised and contain four different…

Q: Many biological relevant compounds such as steroid hormones have multiple stereocentres (chiral…

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Q: VIII. Assign R, S configurations to each chirality center in the molecule below. Br CH3 X OH CH3 I I…

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Q: Identify the stereocentres, any, in the following structure. The carbon atoms have been numbered for…

A: We have given two questions. In one question, we have to tell which carbon atom is steteocentre.In…

Q: What is the relationship between these molecules? Enantiomers, Diastereomers, Identicas

A: we have to determine the relation between the given molecules

Q: Consider a solution that contains 66.7 % of the R isomer (specific rotation = -46 °) and 33.3% of…

A: The specific rotation of the R-isomer is = -46 degree The enantiomeric excess of the R-isomer is =…

Q: 10) Circle each chiral molecule among those shown below. Cym OH Br Br Br

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Q: Morphine is a highly effective, yet highly addictive painkiller from which many other narcotics have…

A: Given that : We have to identify all of the atoms on morphine that are chiral centers :

Q: Specify the configurations (R or S) of chiral centers a and b in the chem3D structure below. Carbon…

A: Given that, the structure of the compound is:

Q: 8. Draw the Fischer projection structures of all 4 of the stereoisomers of 2-methyl-1,3-butanedio"…

A: Optically active compound do not possesses centre symmetry & plane of symmetry. Compounds having…