Adipic-DB acid is a deuterated isotopically labeled analog of adipic acid (hexanedioic acid-d₄ or similar), with high deuterium enrichment (≥98 atom % D). As a specialty chemical, it is primarily utilized in scientific research and analytical applications, such as NMR spectroscopy, mass spectrometry, and as an internal standard for quantifying unlabeled compounds. It serves as a tracer in metabolic pathway studies, pharmacokinetic research, and mechanistic investigations in organic chemistry. This niche intermediate is not suitable for large-scale industrial production like conventional adipic acid, which is used in nylon and polyurethane manufacturing, but rather for precise labeling in laboratory settings to enhance detection sensitivity and specificity.