Pharmaceutical preparations; pharmaceutical preparations and substances for the prevention and treatment of disorders and diseases in, generated from or affecting the central nervous system; pharmaceutical preparations and substances acting on the central nervous system; central nervous system stimulants; pharmaceutical preparations and substances for the prevention and treatment of psychiatric and neurological diseases and disorders; pharmaceutical preparations and substances for the prevention and treatment of Alzheimer's disease, depression, psychosis, anxiety, epilepsy, sclerosis, porphyries, Huntington's disease, insomnia, Parkinson disease, schizophrenia, bipolar disorder, oncology, pain, alcoholism and dependency; preparations, substances, reagents and agents for diagnostic and medical purposes