Octanoic acid-d3

• CAT Number: M098869
• CAS Number: 156779-05-4
• Molecular Formula: C8H13D3O2
• Molecular Weight: 147.23
• Purity: ≥95%
• Synonyms: 8,8,8-trideuteriooctanoic acid
• InChI: InChI=1S/C8H16O2/c1-2-3-4-5-6-7-8(9)10/h2-7H2,1H3,(H,9,10)/i1D3
• InChIKey: WWZKQHOCKIZLMA-FIBGUPNXSA-N
• SMILES: [2H]C([2H])([2H])CCCCCCC(=O)O

Octanoic acid-d3（Cat No.:M098869）is a stable isotope-labeled form of octanoic acid, also known as caprylic acid, in which three hydrogen atoms are replaced with deuterium (²H or D). This medium-chain fatty acid is commonly used in metabolic, nutritional, and pharmacokinetic studies to trace lipid pathways and mitochondrial β-oxidation. The deuterium labeling allows for precise quantification using mass spectrometry without altering the compound’s biological behavior. Octanoic acid-d3 is valuable in research involving lipid metabolism, gut microbiota interactions, and energy production, and serves as an internal standard in various analytical and clinical applications.