Number of chiral centers in chloramphenicol is :

Answer

To determine the number of chiral centers in chloramphenicol, we will follow these steps:

### Step 1: Understand the Structure of Chloramphenicol
Chloramphenicol has a complex structure that includes a benzene ring, a nitro group, a hydroxyl group, and various carbon atoms. We need to visualize or draw the structure to identify the chiral centers.

### Step 2: Identify Carbon Atoms
In the structure of chloramphenicol, we will identify all the carbon atoms present. The key is to focus on the carbon atoms that are bonded to four different substituents.

### Step 3: Determine Chirality
A carbon atom is considered a chiral center if it is attached to four different groups. We will analyze each carbon atom in the structure:
- The first carbon we analyze has two chlorine atoms attached, which means it is not chiral.
- The next carbon has four different groups attached (for example, a hydroxyl group, a hydrogen atom, a carbon chain, and another substituent), making it a chiral center.
- We continue this process for each carbon atom in the structure.

### Step 4: Count the Chiral Centers
After analyzing all the carbon atoms, we find that there are two carbon atoms that are attached to four different groups. Therefore, these two carbon atoms are chiral centers.

### Conclusion
Chloramphenicol has **2 chiral centers**.

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