Used in plant physiology research to study auxin metabolism and regulation. Acts as a storage or inactivated form of indole-3-acetic acid (IAA), helping control active auxin levels in plant tissues. Plays a role in modulating plant growth and development, including root formation, cell elongation, and responses to environmental stimuli. Utilized in studies on hormone conjugation, transport, and stress responses in plants. Also serves as a standard in analytical methods for detecting auxin derivatives in biological samples.