Which compound is formed by acetylation of morphine ?

Options

A. Heroin
B. Cocaine
C. Tobacco
D. Marijuana

Explanation

**Step-by-Step Solution:**

1. **Understanding Morphine**: Morphine is an opioid that is derived from the opium poppy plant, specifically from the species Papaver somniferum. It is primarily used for its pain-relieving properties and has a stimulating effect on the central nervous system (CNS).

2. **Acetylation Process**: Acetylation is a chemical reaction that introduces an acetyl group into a compound. When morphine undergoes acetylation, it transforms into a different compound.

3. **Identifying the Resulting Compound**: The compound formed by the acetylation of morphine is known as heroin. Heroin is a potent opioid that is commonly abused and has significant effects on the CNS, often detaching users from reality.

4. **Evaluating the Options**: The question provides several options: heroin, cocaine, tobacco, and marijuana.
- **Cocaine** is derived from the Erythroxylum coca plant and is not related to morphine.
- **Tobacco** comes from the Nicotiana genus and is also unrelated to morphine.
- **Marijuana** is derived from the Cannabis sativa plant and is a cannabinoid, not an opioid.
- Therefore, the only correct answer is heroin, which is directly formed from the acetylation of morphine.

5. **Conclusion**: The compound formed by the acetylation of morphine is heroin.

**Final Answer**: Heroin

---