An ester used in medicine is :

Options

A. ethyl acetate
B. methyl acetate
C. methyl salicylate
D. ethyl benzoate

Explanation

To determine which ester is used in medicine from the given options, we will analyze each option based on their medicinal properties.

### Step-by-Step Solution:

1. **Identify the Options**: The options provided are:
- A) Ethyl acetate
- B) Methyl acetate
- C) Methyl salicylate
- D) Ethyl benzoate

2. **Understand the Context**: We need to find an ester that is specifically used in medicine. This means we should look for esters that have known medicinal applications.

3. **Analyze Each Option**:
- **Ethyl acetate**: This is primarily used as a solvent in laboratories and industries. It does not have significant medicinal uses.
- **Methyl acetate**: Similar to ethyl acetate, it is mainly used as a solvent and does not have notable medicinal applications.
- **Methyl salicylate**: This compound is known for its use in topical pain relief products. It is also a component of aspirin (acetylsalicylic acid), which is widely used as a pain reliever and anti-inflammatory medication.
- **Ethyl benzoate**: This compound is used in the fragrance industry and as a solvent, but it does not have significant medicinal uses.

4. **Conclusion**: Based on the analysis, the only ester that is used in medicine is **C) Methyl salicylate**. It is associated with the production of aspirin, which is commonly used for pain relief and reducing fever.

5. **Final Answer**: The ester used in medicine is **Methyl salicylate**.