Triglochinic acid is primarily used in research settings due to its structural similarity to biologically active compounds. It serves as a reference standard in analytical chemistry, particularly in the study of plant metabolites and natural product chemistry. The compound has been investigated for its potential role in understanding metabolic pathways in certain aquatic and marsh plants where it naturally occurs. Additionally, it is used in biochemical assays to explore enzyme inhibition and detoxification mechanisms. Due to its reactivity, it also finds limited use in organic synthesis as an intermediate in the development of specialized reagents. However, it is not widely used in industrial or commercial applications.