11-Mercapto-1-undecanol
11-Mercapto-1-undecanol (CAS: 73768-94-2), with the formula HS(CH2)11OH and a molecular weight of 204.37 g/mol, is a bifunctional organic compound featuring both a thiol and a hydroxyl group. This chemical is particularly valuable in organic synthesis, notably for its role in the two-step preparation of unsymmetrical disulfides without the need for alcohol protection. Its structure lends itself to applications in materials science and nanotechnology.
- IUPAC
- 11-Hydroxy-1-undecanethiol,11-Hydroxy-1-undecanthiol,11-Hydroxyundecane-1-thiol,11-Mercaptoundecanol,MUD

Synthesis of Unsymmetrical Disulfides
This compound is instrumental in a two-step synthetic route to unsymmetrical disulfides. A key advantage is that the alcohol functional group does not require protection during this process, simplifying the reaction sequence.
Materials Science
The dual functionality of 11-Mercapto-1-undecanol makes it a useful building block in materials science, enabling the creation of novel polymers and surface modifications.
Micro/Nanoelectronics
Its thiol group allows for strong chemisorption onto gold surfaces, making it relevant in the fabrication and functionalisation of nanoscale electronic devices and components.
Self-Assembly and Surface Modification
This molecule can be employed in self-assembly processes and contact printing techniques to create ordered monolayers on surfaces, which is critical for sensor development and advanced coatings.
| Molecular weight | 204.37 |
|---|---|
| Linear formula | HS(CH2)11OH |
| Assay | 97% |
| Density | 0.790 g/mL at 25 °C |
| Refractive index | n20/D 1.359 |
| Concentration | 5 mM in ethanol |
| Application | Used in a two-step synthesis of unsymmetrical disulfides which does not require alcohol protection.1 |
| Melting point | 33-37 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Flash point | >113 °C / >235.4 °F |
| Transport (UN / ADR) | UN 3335 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 11-Mercapto-1-undecanol used for?
+
11-Mercapto-1-undecanol (CAS: 73768-94-2) is primarily used in the two-step synthesis of unsymmetrical disulfides without requiring alcohol protection. It also finds applications in materials science, micro/nanoelectronics, and self-assembly due to its bifunctional nature.
What are the CAS number and chemical formula for 11-Mercapto-1-undecanol?
+
The CAS number for 11-Mercapto-1-undecanol is 73768-94-2, and its chemical formula is HS(CH2)11OH.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 11-Mercapto-1-undecanol with a purity of 97% (assay). We do not represent this product as USP, BP, EP, or any pharmacopoeia grade.
How should 11-Mercapto-1-undecanol be handled safely?
+
11-Mercapto-1-undecanol is classified with a GHS07 symbol and the signal word 'Warning'. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Recommended personal protective equipment includes a dust mask type N95 (US), eyeshields, and gloves. Handle in a well-ventilated area and avoid breathing dust/fume/gas/mist/vapours/spray.
Is 11-Mercapto-1-undecanol a controlled substance?
+
Based on the provided data, 11-Mercapto-1-undecanol is not listed as a controlled substance.
How is 11-Mercapto-1-undecanol packed, shipped, and exported?
+
Tech Serve Solutions specialises in the global supply and export of fine chemicals. Specific packaging and shipping details for 11-Mercapto-1-undecanol will be provided upon inquiry, adhering to all relevant transport regulations.
How can I request a quote or sample for 11-Mercapto-1-undecanol?
+
To request a quote or a sample of 11-Mercapto-1-undecanol, please contact our sales team through the website or by phone. Our team will be pleased to assist you.
▶ Related products

(11-Mercaptoundecyl)-N,N,N-trimethylammonium bromide
Micro / NanoElectronics

(11-Mercaptoundecyl)hexa(ethylene glycol)
C23H48O7S
Micro / NanoElectronics
(12-Phosphonododecyl)phosphonic acid
C12H28O6P2
Micro / NanoElectronics
(2,2,3,3,4,4,5,5,6,6,7,7,7-Tridecafluoroheptyl)oxirane
C9H5F13O
Micro / NanoElectronics
(2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,9-Heptadecafluorononyl)oxirane
C11H5F17O
Micro / NanoElectronics
(3-Chloropropyl)dimethoxymethylsilane
Cl(CH2)3Si(OCH3)2CH3
Micro / NanoElectronics
(3-Chloropropyl)trimethoxysilane
Cl(CH2)3Si(OCH3)3
Micro / NanoElectronics
(4-Bromophenyl)diphenylsulfonium triflate
C19H14BrF3O3S2
Micro / NanoElectronics▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis