1-Bromo-3,4-(methylenedioxy)benzene
1-Bromo-3,4-(methylenedioxy)benzene (CAS 2635-13-4), with the molecular formula C7H5BrO2 and a molecular weight of 201.02 g/mol, is a valuable organic building block. This compound features a brominated methylenedioxybenzene structure, making it a useful intermediate in organic synthesis. It is primarily employed in the research and development of novel chemical entities and advanced materials, serving as a key component in multi-step synthetic pathways.
- IUPAC
- 4-Bromo-1,2-(methylenedioxy)benzene,5-Bromo-1,3-benzodioxole
- Synonyms
- 4-Bromo-1,2-(methylenedioxy)benzene5-Bromo-1,3-benzodioxole

Organic Synthesis Intermediate
Serves as a crucial building block in the synthesis of complex organic molecules. Its reactivity allows for diverse chemical transformations in the development of pharmaceuticals and fine chemicals.
Research and Development
Utilised in academic and industrial research laboratories for exploring new reaction methodologies and designing novel chemical structures. It is a key reagent for introducing the methylenedioxybenzene moiety.
Material Science
Incorporated into synthetic routes for the development of advanced materials and functional organic compounds. Its unique structure can impart specific properties to the final products.
| Molecular weight | 201.02 |
|---|---|
| Empirical formula | C7H5BrO2 |
| Assay | 97% |
| Boiling point | 85-86 °C/1 mmHg(lit.) |
| Density | 1.669 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.583(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 | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 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 1-Bromo-3,4-(methylenedioxy)benzene used for?
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1-Bromo-3,4-(methylenedioxy)benzene is primarily used as an intermediate in organic synthesis and in research and development for creating complex organic molecules and advanced materials.
What is the CAS number and formula for 1-Bromo-3,4-(methylenedioxy)benzene?
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The CAS number is 2635-13-4, and the empirical formula is C7H5BrO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Bromo-3,4-(methylenedioxy)benzene with an assay of 97%. This product is not represented as USP, BP, EP, or any other pharmacopoeia grade.
What are the safety considerations when handling 1-Bromo-3,4-(methylenedioxy)benzene?
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This compound is classified with GHS07 and a Warning signal word. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including eyeshields and gloves, and adequate ventilation are essential. Handle with care according to the safety data sheet.
How is 1-Bromo-3,4-(methylenedioxy)benzene packed, shipped, and exported?
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Tech Serve Solutions expertly packs, ships, and exports fine chemicals globally, adhering to all relevant international shipping regulations. Specific packaging details are available upon request.
How can I request a sample or a quote for 1-Bromo-3,4-(methylenedioxy)benzene?
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Please contact our sales team directly via our website or by phone to request a sample or a quotation for 1-Bromo-3,4-(methylenedioxy)benzene.
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