5-Chloro-1-indanone
5-Chloro-1-indanone (CAS: 42348-86-7) is an organic compound with the molecular formula C9H7ClO and a molecular weight of 166.60 g/mol. This chemical building block is characterised by its indanone structure featuring a chlorine substituent. It serves as a valuable intermediate in organic synthesis, particularly in the development of novel pharmaceutical compounds and research chemicals. Its ketone functionality and aromatic ring offer versatile reaction sites for chemical transformations.

Organic Synthesis Intermediate
5-Chloro-1-indanone is utilised as a key building block in multi-step organic synthesis. Its reactive sites allow for diverse chemical modifications, leading to complex molecular architectures.
Pharmaceutical Research
This compound is employed in the synthesis of potential drug candidates and pharmacologically active molecules. Its structure can be incorporated into various therapeutic agents.
Chemical Research and Development
As a readily available reagent, 5-Chloro-1-indanone finds application in academic and industrial research for exploring new synthetic methodologies and developing novel materials.
| Molecular weight | 166.60 |
|---|---|
| Empirical formula | C9H7ClO |
| Assay | 99% |
| Melting point | 94-98 °C(lit.) |

Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H315Causes skin irritation
- H319Causes serious eye irritation
- H332Harmful if inhaled
- 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, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22-36/37/38 |
| 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 5-Chloro-1-indanone used for?
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5-Chloro-1-indanone is primarily used as an intermediate in organic synthesis, particularly for the development of pharmaceuticals and other complex organic molecules in research and development settings.
What is the CAS number and molecular formula for 5-Chloro-1-indanone?
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The CAS number for 5-Chloro-1-indanone is 42348-86-7, and its molecular formula is C9H7ClO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5-Chloro-1-indanone with an assay of 99%. We do not represent this product as USP, BP, EP, or any pharmacopoeia grade.
How should 5-Chloro-1-indanone be handled?
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Handling 5-Chloro-1-indanone requires appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. It is classified with hazard statements H302, H312, H315, H319, H332, and H335, indicating it is harmful if swallowed, in contact with skin, or if inhaled, and causes skin and serious eye irritation, and may cause respiratory irritation. Ensure good ventilation.
Is 5-Chloro-1-indanone a controlled substance?
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The provided data does not indicate that 5-Chloro-1-indanone is a controlled substance.
How is 5-Chloro-1-indanone packed and exported?
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Tech Serve Solutions exports chemicals globally, ensuring appropriate packaging for safe transport and adherence to international shipping regulations. Specific packaging details are available upon request.
How can I request a quote or sample of 5-Chloro-1-indanone?
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To request a quote or sample of 5-Chloro-1-indanone, please contact our sales department through the website or provide your details via the 'Enquire Now' form.
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