Question

The structural formula of cocaine is shown below. How many stereogenic carbon atoms are there in this molecule ?

• A. $6$
• B. $3$
• C. $5$
• D. $4$

Answer 1

The correct option is D $4$

A chiral centre in an organic compound is an atom directly connected to four different substituents.

The $C$ is chiral carbon if it has four different substituents.
There are four chiral centres as shown below:

Hence, (d) is correct.