Used in biochemical research as a metabolite and derivative of tryptophan, playing a role in studying indole metabolism pathways. Commonly employed in the analysis of plant growth regulators and as a reference standard in analytical chemistry for detecting indole compounds. Also utilized in the development and testing of pharmaceutical intermediates, particularly in serotonin-related compound studies. Its structure supports investigations into enzyme activity and metabolic transformations involving acetic acid and methoxy-substituted indoles.