Pick out the odd one from amongst the following compounds on the basis of their medicinal properties mentioning the reason : luminal, seconal, phenacetin, equanil.

Explanation

To solve the question of identifying the odd compound based on their medicinal properties, we will analyze each of the compounds listed: luminal, seconal, phenacetin, and equanil.

### Step 1: Identify the medicinal properties of each compound.
- **Luminal**: This is a barbiturate used primarily as a sedative and anticonvulsant. It acts as a tranquilizer.
- **Seconal**: Also a barbiturate, Seconal is used as a sedative and hypnotic. It is classified as a tranquilizer.
- **Phenacetin**: This compound is an analgesic and antipyretic. It is used to relieve pain and reduce fever.
- **Equanil**: This is a tranquilizer used for its sedative effects, similar to Luminal and Seconal.

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