Cyclopentanethiol
Cyclopentanethiol (CAS: 1679-07-8), with the molecular formula C5H9SH and a molar mass of 102.20 g/mol, is a cyclic thiol. This compound is recognised for its role as a versatile building block in organic synthesis and materials science. Its applications extend to micro/nanoelectronics, particularly in self-assembly processes and the creation of novel materials. Tech Serve Solutions offers this chemical for research and development purposes.
- IUPAC
- Cyclopentyl mercaptan

Organic Synthesis
Cyclopentanethiol serves as a valuable intermediate in the synthesis of complex organic molecules. Its thiol group allows for various functionalization reactions, enabling the construction of diverse chemical structures.
Materials Science
This compound is employed in materials science for developing novel materials with specific properties. It is particularly relevant in research concerning self-assembly and surface modification techniques.
Micro/Nanoelectronics
In the field of micro and nanoelectronics, cyclopentanethiol is utilised for its potential in self-assembly processes and the fabrication of advanced electronic components. Its sulfur functionality facilitates controlled surface interactions.
| Molecular weight | 102.20 |
|---|---|
| Linear formula | C5H9SH |
| Assay | 97% |
| Boiling point | 129-131 °C/745 mmHg(lit.) |
| Density | 0.955 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.4902(lit.) |
| Vapour pressure | 1 mmHg (20 °C) |
| Vapour density | 0.96 (vs air) |

Hazard statements
- H226Flammable liquid and vapour
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 25 °C / 77 °F |
| Transport (UN / ADR) | UN 3336 3/PG 3 |
| Water hazard class (WGK, DE) | 3 |
| Risk statements (R) | 10 |
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 Cyclopentanethiol used for?
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Cyclopentanethiol is primarily used as a building block in organic synthesis and in materials science, including applications in micro/nanoelectronics and self-assembly processes.
What is the CAS number and molecular formula for Cyclopentanethiol?
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The CAS number for Cyclopentanethiol is 1679-07-8, and its molecular formula is C5H9SH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Cyclopentanethiol with an assay of 97%. We offer this as a technical/research grade chemical; it is not represented as USP, BP, EP, or other pharmacopoeia grades.
How should Cyclopentanethiol be handled safely?
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Cyclopentanethiol is a flammable liquid and vapour (H226). Handle with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator. Ensure handling occurs in a well-ventilated area, away from ignition sources.
How is Cyclopentanethiol packed and shipped?
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As an exporter of fine chemicals, Tech Serve Solutions ensures appropriate packaging according to international regulations for shipping hazardous materials like UN 3336, 3/PG 3. Please contact us for specific shipping details.
How can I request a quote or sample of Cyclopentanethiol?
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To request a quote or sample of Cyclopentanethiol, please use the contact form on our website or contact our sales team directly with your requirements.
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