Nonyloxytryptamine oxalate is primarily utilized in research settings to study its interactions with serotonin receptors. It serves as a valuable tool in pharmacological studies to understand receptor binding and signaling pathways. Additionally, it is explored for its potential effects on mood regulation and neurological disorders, contributing to the development of novel therapeutic agents. Its application extends to biochemical assays where it helps in elucidating the mechanisms of serotonin-related processes in the brain.