Textbook Question
The stereoisomer of cholesterol found in nature is shown here.
a. How many asymmetric centers does cholesterol have?
b. What is the maximum number of stereoisomers that cholesterol can have?
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5. Chirality
Chirality Test 2 - Stereocenters
Multiple Choice
Which of the following atoms are stereocenters?
A
Neither I nor II
B
II only
C
Both I and II
D
I only
Verified step by step guidance1
Identify the definition of a stereocenter: A stereocenter is an atom, most commonly carbon, that is bonded to four different groups, allowing for stereoisomerism.
Examine atom I in the structure: Check if it is bonded to four different groups. In the image, atom I is a carbon bonded to an OH group, a hydrogen (implied), and two different carbon chains.
Determine if atom I is a stereocenter: Since atom I is bonded to four different groups (OH, hydrogen, and two different carbon chains), it qualifies as a stereocenter.
Examine atom II in the structure: Check if it is bonded to four different groups. In the image, atom II is a carbon bonded to two identical groups (methyl groups) and a hydrogen (implied).
Determine if atom II is a stereocenter: Since atom II is bonded to two identical groups, it does not qualify as a stereocenter. Therefore, only atom I is a stereocenter.
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