The derivatives of barbituric acid luminal and veronal belongs to class.. . . .

.Veronal and luminal are derivatives of barbituric acid which are tranquilizers and neurologically active drugs.

Tranquilizers are used to reduce anxiety, fear, tension, agitation, and related states of mental disturbance. Tranquilizers fall into two main classes, major and minor. Major tranquilizers, which are also known as antipsychotic agents, or neuroleptics, are so-called because they are used to treat major states of mental disturbance in schizophrenics and other psychotic patients.