(4-Chlorophenylthio)acetone
(4-Chlorophenylthio)acetone (CAS: 25784-83-2) is a sulfur-containing organic compound with the molecular formula C9H9ClOS and a molecular weight of 200.69 g/mol. This chemical serves as a valuable building block in organic synthesis. Its primary utility lies in its role as an intermediate for the preparation of more complex molecules, particularly within the fields of chemical research and development. It is supplied by TSS with an assay of 97%.
- IUPAC
- 1-[(4-Chlorophenyl)thio]-2-propanone
- Synonyms
- 1-[(4-Chlorophenyl)thio]-2-propanone

Organic Synthesis Intermediate
Utilised as a precursor in multi-step organic synthesis pathways, enabling the construction of novel molecular architectures. Its functional groups allow for diverse chemical transformations.
Research and Development
Employed in laboratory settings for exploratory chemical research and the development of new synthetic methodologies. Assists chemists in investigating reaction mechanisms and discovering new compounds.
Building Block for Heterocycles
Can serve as a key component in the synthesis of various sulfur-containing heterocyclic compounds. These structures are often of interest in medicinal chemistry and materials science.
| Molecular weight | 200.69 |
|---|---|
| Empirical formula | C9H9ClOS |
| Assay | 97% |
| Melting point | 38-42 °C(lit.) |


Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Flash point | >110 °C / >230 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-37/38-41 |
| Safety statements (S) | 26-36/37/39 |
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-Chlorophenylthio)acetone used for?
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(4-Chlorophenylthio)acetone is primarily used as a building block in organic synthesis and for research and development purposes, particularly in the creation of more complex molecules and heterocyclic compounds.
What is the CAS number and chemical formula for (4-Chlorophenylthio)acetone?
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The CAS number is 25784-83-2, and the empirical formula (Hill notation) is C9H9ClOS.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies (4-Chlorophenylthio)acetone with an assay of 97%. TSS does not represent this product as USP, BP, or EP grade.
How should (4-Chlorophenylthio)acetone be handled safely?
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(4-Chlorophenylthio)acetone is classified as Dangerous. It is harmful if swallowed (H302), causes skin irritation (H315), causes serious eye damage (H318), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask type N95, eyeshields, faceshields, and gloves, should be worn. Ensure adequate ventilation. In case of contact with eyes, rinse cautiously with water for several minutes, removing contact lenses if present and easy to do. Continue rinsing.
How is (4-Chlorophenylthio)acetone packed and shipped?
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Products are carefully packed to meet international shipping regulations and are exported globally by Tech Serve Solutions. Specific packaging details will be provided with your order confirmation.
How can I request a sample or quote for (4-Chlorophenylthio)acetone?
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To request a sample or a quote, please contact our sales department through the website or by calling us. Provide the product name and CAS number (25784-83-2) for prompt service.
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