5-Chlorobenzoxazole
5-Chlorobenzoxazole (CAS: 17200-29-2), with the molecular formula C7H4ClNO and a molecular weight of 153.57 g/mol, is a halogenated heterocyclic compound. It serves as a valuable building block in chemical synthesis, particularly within the realm of organic chemistry. Its structure lends itself to further functionalization, making it a key intermediate in the preparation of more complex molecules for research and development purposes.

Organic Synthesis Intermediate
5-Chlorobenzoxazole is employed as a versatile intermediate in the synthesis of diverse organic compounds. Its reactive chlorine atom and benzoxazole core allow for various derivatisation reactions.
Heterocyclic Chemistry Research
This compound is utilised in academic and industrial research laboratories for exploring new synthetic pathways involving halogenated heterocycles. It contributes to the development of novel molecular architectures.
Pharmaceutical Intermediate Development
As a building block, 5-Chlorobenzoxazole may be incorporated into the synthetic routes for potential pharmaceutical agents. Its structural features can be critical for biological activity.
| Molecular weight | 153.57 |
|---|---|
| Empirical formula | C7H4ClNO |
| Assay | 95% |
| Melting point | 42-46 °C |

Hazard statements
- H302Harmful if swallowed
- 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) | Xn |
| Risk statements (R) | 22-36/37/38 |
| Safety statements (S) | 26 |
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-Chlorobenzoxazole used for?
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5-Chlorobenzoxazole is primarily used as a building block and intermediate in organic synthesis, heterocyclic chemistry research, and potentially in the development of pharmaceutical agents.
What is the CAS number and formula for 5-Chlorobenzoxazole?
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The CAS number for 5-Chlorobenzoxazole is 17200-29-2, and its empirical formula is C7H4ClNO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5-Chlorobenzoxazole with an assay of 95%. This product is suitable for chemical synthesis and research purposes; TSS does not represent it as USP, BP, or EP grade.
How should 5-Chlorobenzoxazole be handled safely?
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5-Chlorobenzoxazole is classified as a Warning. Hazards include harmful if swallowed (H302), causes skin irritation (H315), causes serious eye irritation (H319), and may cause respiratory irritation (H335). Recommended PPE includes a dust mask type N95 (US), eyeshields, and gloves. Avoid breathing dust/fume/gas/mist/vapours/spray. In case of contact with eyes, rinse cautiously with water for several minutes.
Is 5-Chlorobenzoxazole a controlled substance?
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The provided data does not indicate that 5-Chlorobenzoxazole is a controlled substance.
How is 5-Chlorobenzoxazole packed and shipped?
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Products are carefully packed according to international shipping regulations for hazardous materials. TSS is a global supplier and exporter, experienced in shipping fine chemicals worldwide.
How can I request a quote or sample?
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To request a quote or a sample of 5-Chlorobenzoxazole, please use the 'Request a Quote' or 'Request Sample' button on our product page, or contact our sales team directly.
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