4-Fluorobenzyl mercaptan
4-Fluorobenzyl mercaptan (CAS 15894-04-9), with the molecular formula FC6H4CH2SH and a molecular weight of 142.19 g/mol, is a fluorinated organic building block. This thiol derivative serves as a valuable intermediate in organic synthesis, particularly for introducing the 4-fluorobenzylthio moiety into target molecules. It is a key reagent for research and development in the chemical and pharmaceutical industries.

Organic Synthesis Intermediate
4-Fluorobenzyl mercaptan is extensively employed as a versatile building block in the synthesis of complex organic molecules. Its thiol group readily participates in various reactions, enabling the formation of thioethers and other sulfur-containing compounds.
Pharmaceutical Research
This compound serves as a crucial intermediate in the development of novel pharmaceutical agents. The presence of the fluorine atom can modulate the pharmacokinetic and pharmacodynamic properties of drug candidates.
Material Science
It can be utilized in the synthesis of specialized polymers and materials where the incorporation of fluorinated benzyl thioether structures is desired for specific performance characteristics.
| Molecular weight | 142.19 |
|---|---|
| Linear formula | FC6H4CH2SH |
| Assay | 96% |
| Boiling point | 72-74 °C/15 mmHg(lit.) |
| Density | 1.157 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.545(lit.) |
| Protective equipment | Eyeshields, Gloves, half-mask respirator (EU), half-mask respirator (US), multi-purpose combination respirator cartridge (US) |
|---|---|
| Flash point | 76 °C / 168.8 °F |
| Transport (UN / ADR) | UN 3334 |
| Water hazard class (WGK, DE) | 3 |
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 4-Fluorobenzyl mercaptan used for?
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4-Fluorobenzyl mercaptan is primarily used as an intermediate in organic synthesis, particularly for the development of pharmaceuticals and in material science applications.
What are the CAS number and formula for 4-Fluorobenzyl mercaptan?
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The CAS number for 4-Fluorobenzyl mercaptan is 15894-04-9, and its molecular formula is FC6H4CH2SH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Fluorobenzyl mercaptan with an assay of 96%. We do not represent this product as USP, BP, or EP grade.
What are the safety and handling considerations for 4-Fluorobenzyl mercaptan?
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4-Fluorobenzyl mercaptan is flammable with a flash point of 76 °C (168.8 °F). Handling requires appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection (half-mask respirator or multi-purpose combination cartridge), as indicated by WGK Germany 3 and UN 3334 classification.
How can I request a sample or quote for 4-Fluorobenzyl mercaptan?
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To request a sample or a quote for 4-Fluorobenzyl mercaptan, please contact our sales department via the website or by phone.
How is 4-Fluorobenzyl mercaptan packed and shipped?
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4-Fluorobenzyl mercaptan is packed and shipped according to international regulations for hazardous materials, including its UN 3334 classification.
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