Cyclopropyl bromide CAS 4333-56-6
Aure Chemical Delivers Reliable Cyclopropyl bromide (CAS 4333-56-6) at Consistent Quality
Cyclopropyl bromide is a reactive alkyl halide widely utilized as a building block in organic synthesis. It enables efficient introduction of the cyclopropyl moiety into target molecules through substitution or organometallic reactions.
This specialty reagent supports the construction of complex structures commonly found in pharmaceutical candidates and advanced fine chemicals.
Basic Information
| CAS No. | 4333-56-6 |
|---|---|
| EC No. | 224-375-7 |
| Linear Formula | C3H5Br |
| Molecular Weight | 120.98 |
| Appearance | Clear colorless to pale yellow liquid |
| Melting Point | Not available (typical reference) |
| Boiling point | 69 °C (lit.) |
| Density | 1.51 g/mL at 25 °C (lit.) |
| Solubility | Insoluble in water; soluble in common organic solvents |
| Storage Conditions | Store at 2–8 °C in a tightly closed container, protected from light and moisture |
| Chemical Structure | ![]() |
Key Applications
Organic synthesis intermediate: Cyclopropyl bromide is used in alkylation and Grignard reactions to incorporate the cyclopropyl ring into organic frameworks.
Pharmaceutical intermediate: Employed in the synthesis of cyclopropyl-substituted active pharmaceutical ingredients and drug candidates.
Fine chemical intermediate: Supports production of specialty fine chemicals featuring strained-ring architectures.
Laboratory research: Essential reagent for synthetic methodology studies and medicinal chemistry exploration.
Process development: Aids route optimization and scale-up for processes requiring cyclopropyl building blocks.
Reliable Supply and Support from Aure Chemical
Consistent product quality: High purity specifications maintained through routine quality control and batch verification testing.
Flexible global supply: Stable international logistics arrangements supporting laboratory, pilot, and production scale requirements.
SDS and COA support: Standard SDS and COA documentation provided for regulatory compliance and customer quality assurance.
Packaging and technical service: Tailored packaging in HDPE drums or lab-scale bottles with responsive technical assistance for liquid handling.
Packaging, Logistics & Compliance Capabilities
Aure Chemical provides flexible packaging solutions, compliant logistics arrangements, and controlled storage practices to support laboratory-scale, pilot-scale, and commercial-scale global supply.
Packaging Options
- 25 kg / 50 kg bags (fiber drum, aluminum bag, HDPE drum)
- 100 kg / 200 kg steel or HDPE drums
- 500 kg / 1000 kg IBC containers
- Bulk liquids in ISO tank containers
- Customized packaging upon request
Transportation Modes
- Sea freight (FCL / LCL)
- Air freight for selected products
- Road and rail transportation
- Dangerous & non-dangerous cargo handling
- Incoterms: EXW, FOB, CFR, CIF, DAP, DDP
Storage & Handling
- Dry, cool, and well-ventilated warehouses
- Segregation by hazard class
- FIFO inventory management
- Temperature-controlled storage if required
- Regular inspection & labeling control
Documentation & Compliance
- Safety Data Sheet (SDS)
- Certificate of Analysis (COA)
- Dangerous Goods Declaration (DGD)
- Packing List & Commercial Invoice
- IMDG / IATA / ADR compliant labeling
For packaging customization or logistics consultation, please contact us.


