Which of the following is NOT a basic chemical class of amphetamines?

The correct response is based on understanding the classification of amphetamines. While amphetamine sulphate, dextroamphetamine, and methamphetamine are specific types of amphetamines that are used clinically and known for their stimulant effects, phenethylamine is a different class of compound altogether.

Phenethylamine acts as a natural monoamine alkaloid and is found in various plants and foods. It serves as a precursor to many neurotransmitters but isn’t classified under the amphetamine chemical class, which is characterized by specific structures that include a phenethylamine core but have additional functional groups and modifications that distinguish them as amphetamines.

This distinction is important because understanding the chemical structure and classification helps in comprehending the pharmacological effects and uses of these substances in therapy or substance abuse contexts.