Final answer:
Oxazepam is the drug among the given options that do not have active metabolites, as it is an active metabolite of other benzodiazepines and acts directly without further metabolism.
Step-by-step explanation:
The question asks which of the following does not have active metabolites: Oxazepam, Chlordiazepoxide, Triazolam, Clonazepam, or Quazepam. An active metabolite is a byproduct of the metabolism of a drug that retains pharmacological activity. Among the given options, Oxazepam is the drug that does not generate active metabolites. Instead, Oxazepam itself is an active metabolite of other benzodiazepines like Diazepam and has a direct action without further metabolism. Active metabolites are formed when a drug is metabolized in the body and can contribute to the drug's overall effects.