Question

The above structure is of:

• A. Norephedrine
• B. Pseudoephedrine
• C. Ephedrine
• D. Norpseudoephedrine

Answer 1

The Correct Option is C

The question asks us to identify the chemical structure provided in the image. Let's analyze the structure and compare it with the options given to determine the correct answer. 

The structure depicted in the image is a well-known chemical compound. To identify it, let's examine its characteristics:

1. The structure includes a benzene ring attached to a carbon chain.
2. The carbon chain contains a hydroxyl group \(\text{(OH)}\) and a methylamino group \(\text{(NHCH}_3\text{)}\).
3. Overall, it is characterized by the presence of a hydroxyl group (-OH) and an amino group with an additional methyl group (–NHCH₃), making it an alpha-alkylamino alcohol derivative of phenethylamine.

Let's examine each option to determine which compound shares these characteristics:

• Norephedrine: This compound lacks the methyl group in the amino part, thus differing from the structure shown.
• Pseudoephedrine: Structurally similar to ephedrine but has a different stereochemistry that results in varied spatial arrangement, especially in the hydroxyl and methylamino groups.
• Ephedrine: The structure matches, as it is known to have the hydroxyl and methylamino groups in the positions seen in the image.
• Norpseudoephedrine: This compound is another stereoisomer and lacks the correct methyl substitution in the mentioned part.

Given the analysis, the compound depicted is Ephedrine, as it best matches the characteristics shown in the structure with both correct functional groups and orientation.

Therefore, the correct answer is: Ephedrine.