2-Chloro-3′,4′-dihydroxyacetophenone
2-Chloro-3′,4′-dihydroxyacetophenone (CAS: 99-40-1) is an organic compound with the linear formula (HO)2C6H3COCH2Cl and a molecular weight of 186.59 g/mol. This chemical serves as a valuable building block in organic synthesis, particularly within the fields of chemical biology and medicinal chemistry. It is recognised for its utility in constructing more complex molecular architectures, making it a sought-after reagent for research and development purposes in academic and industrial laboratories.
- IUPAC
- 4-(Chloroacetyl)catechol
- Synonyms
- (HO)2C6H3COCH2Cl4-(Chloroacetyl)catechol

Organic Synthesis Intermediate
Utilised as a key intermediate in the synthesis of diverse organic molecules. Its reactive chloroacetyl and catechol functionalities allow for various coupling and derivatisation reactions.
Chemical Biology Research
Employed in research investigating biological pathways and molecular interactions. The compound's structure may be incorporated into probes or modulators for studying cellular processes.
Medicinal Chemistry Building Block
Serves as a foundational component for the development of novel pharmaceutical agents. Its incorporation into drug discovery programmes aids in the exploration of new therapeutic candidates.
| Molecular weight | 186.59 |
|---|---|
| Linear formula | (HO)2C6H3COCH2Cl |
| Assay | 97% |
| Melting point | 174-176 °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 |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Gene Information | human ... PTPN6(5777) |
|---|
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 2-Chloro-3′,4′-dihydroxyacetophenone primarily used for?
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2-Chloro-3′,4′-dihydroxyacetophenone is primarily used as an intermediate in organic synthesis, a building block in chemical biology research, and in medicinal chemistry for the development of new pharmaceutical agents.
What is the CAS number and linear formula for 2-Chloro-3′,4′-dihydroxyacetophenone?
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The CAS number is 99-40-1, and the linear formula is (HO)2C6H3COCH2Cl.
What grade and purity does Tech Serve Solutions supply for 2-Chloro-3′,4′-dihydroxyacetophenone?
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Tech Serve Solutions supplies this compound with an assay of 97%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should 2-Chloro-3′,4′-dihydroxyacetophenone be handled safely?
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Handle with appropriate personal protective equipment including a dust mask type N95 (US), eyeshields, and gloves. Avoid breathing dust. Ensure adequate ventilation and wash hands thoroughly after handling. This compound is classified as a Warning with hazards H315, H319, and H335.
How is 2-Chloro-3′,4′-dihydroxyacetophenone packed, shipped, and exported?
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This chemical is carefully packed to ensure integrity during transit and is available for global export by Tech Serve Solutions.
How can I request a sample or quote for 2-Chloro-3′,4′-dihydroxyacetophenone?
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To request a sample or a quotation, please contact our sales team via the website or by phone, providing your specific requirements.
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