Bromocyclobutane
Bromocyclobutane (CAS: 4399-47-7, C4H7Br) is a halogenated hydrocarbon and an organic building block supplied by Tech Serve Solutions. With a molecular weight of 135.00 g/mol, this compound serves as a versatile intermediate in organic synthesis. Its primary utility lies in its role in the construction of more complex molecular architectures within the fine chemical and pharmaceutical industries, offering a cyclobutyl moiety for various chemical transformations.
- IUPAC
- Cyclobutyl bromide
- Synonyms
- Cyclobutyl bromide

Organic Synthesis Intermediate
Bromocyclobutane is frequently employed as a key intermediate in the synthesis of diverse organic compounds. Its reactive carbon-bromine bond allows for nucleophilic substitution reactions, facilitating the introduction of the cyclobutyl group into target molecules.
Pharmaceutical Research and Development
This compound finds application in the R&D sector for the creation of novel pharmaceutical agents. The cyclobutyl ring system is present in several biologically active molecules, making bromocyclobutane a valuable starting material or building block.
Material Science
In material science, bromocyclobutane can be utilized in the development of new polymers or functional materials where the specific properties imparted by the cyclobutyl structure are desired.
| Molecular weight | 135.00 |
|---|---|
| Empirical formula | C4H7Br |
| Assay | 96% |
| Boiling point | 108 °C(lit.) |
| Density | 1.434 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.479(lit.) |


Hazard statements
- H225Highly flammable liquid and vapour
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 22 °C / 71.6 °F |
| Transport (UN / ADR) | UN 1993BF 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 10-36/37/38 |
| 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 Bromocyclobutane used for?
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Bromocyclobutane is primarily used as an intermediate in organic synthesis, particularly in the pharmaceutical and fine chemical industries for the construction of complex molecules containing a cyclobutyl moiety.
What is the CAS number and formula for Bromocyclobutane?
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The CAS number for Bromocyclobutane is 4399-47-7, and its chemical formula is C4H7Br.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Bromocyclobutane with an assay of 96%. We do not represent this product as USP, BP, or EP grade.
How should Bromocyclobutane be handled safely?
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Bromocyclobutane is a flammable liquid and vapour (H225) and causes skin (H315), eye (H319), and respiratory irritation (H335). Handle with appropriate personal protective equipment, including safety eyeshields, face shields, gloves, and use in a well-ventilated area or with a suitable respirator. Keep away from heat, sparks, and open flames.
Is Bromocyclobutane a controlled substance?
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Based on the provided data, Bromocyclobutane is not listed as a controlled substance.
How is Bromocyclobutane packed, shipped, or exported?
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Bromocyclobutane is classified under UN 1993 BF 3 / PGII for transport. TSS exports chemicals globally, adhering to all relevant shipping regulations.
How can I request a sample or quote for Bromocyclobutane?
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To request a sample or quote, please contact our sales team through the website or by phone, providing your specific requirements.
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