16-Mercaptohexadecanoic acid

• CAT Number: M144084
• CAS Number: 69839-68-5
• Molecular Formula: C16H32O2S
• Molecular Weight: 288.49
• Purity: ≥95%
• Synonyms: MHDA
• Solubility: 10 mmol/l （Ethyl alcohol, Methyl alcohol, Chloroform)
• Storage: +8°C
• IUPAC Name: 16-sulfanylhexadecanoic acid
• InChI: InChI=1S/C16H32O2S/c17-16(18)14-12-10-8-6-4-2-1-3-5-7-9-11-13-15-19/h19H,1-15H2,(H,17,18)
• InChIKey: INOAASCWQMFJQA-UHFFFAOYSA-N
• SMILES: C(CCCCCCCC(=O)O)CCCCCCCS

16-Mercaptohexadecanoic acid is a long-chain thiol-containing fatty acid. The molecule features a mercapto (–SH) group at one end and a carboxylic acid (–COOH) group at the other, making it useful in various surface chemistry applications. It is commonly employed in the formation of self-assembled monolayers (SAMs) on gold surfaces due to its strong affinity for gold through the thiol group. SAMs of 16-mercaptohexadecanoic acid are used in sensor development, nanotechnology, and surface functionalization to modify surface properties, such as hydrophobicity or chemical reactivity. Its versatile structure makes it valuable in molecular electronics and biomedical research.