4-Bromobenzyl isocyanate
4-Bromobenzyl isocyanate (CAS: 302912-23-8, Formula: BrC6H4CH2NCO, MW: 212.04) is a valuable organic building block. This compound serves as a key intermediate in chemical synthesis, particularly within the fields of isocyanates and nitrogen compounds. Its reactivity makes it useful for introducing the 4-bromobenzyl group into various molecular structures, facilitating the development of novel compounds. Tech Serve Solutions offers this chemical for research and development purposes.
- IUPAC
- 1-Bromo-4-(isocyanatomethyl)benzene
- Synonyms
- 1-Bromo-4-(isocyanatomethyl)benzene

Organic Synthesis Intermediate
Utilised as a versatile building block in organic synthesis to create more complex molecules. Its isocyanate group readily reacts with nucleophiles, enabling the formation of amides, ureas, and carbamates.
Pharmaceutical Research
A potential intermediate in the synthesis pathway of active pharmaceutical ingredients (APIs). The 4-bromobenzyl moiety can be incorporated into drug candidates for various therapeutic applications.
Materials Science
Can be employed in the development of novel polymers or functionalised materials. The isocyanate group allows for polymerisation or grafting reactions.
| Molecular weight | 212.04 |
|---|---|
| Linear formula | BrC6H4CH2NCO |
| Assay | 98% |
| Boiling point | 266 °C(lit.) |
| Density | 1.514 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.571(lit.) |
| Storage temperature | 2-8°C |


Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H319Causes serious eye irritation
- H332Harmful if inhaled
- H334May cause allergy or asthma symptoms if inhaled
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P342
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22-36-42 |
| Safety statements (S) | 26-36/37/39-45 |
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 4-Bromobenzyl isocyanate used for?
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4-Bromobenzyl isocyanate is primarily used as a building block and intermediate in organic synthesis and pharmaceutical research, enabling the formation of new chemical entities.
What are the CAS number and chemical formula for 4-Bromobenzyl isocyanate?
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The CAS number is 302912-23-8 and the chemical formula is BrC6H4CH2NCO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Bromobenzyl isocyanate with an assay of 98%. We do not represent this product as USP, BP, or EP grade.
How should 4-Bromobenzyl isocyanate be handled?
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4-Bromobenzyl isocyanate is a dangerous substance. Handle with appropriate personal protective equipment, including eyeshields, face shields, gloves, and a suitable respirator, in a well-ventilated area. It is harmful if swallowed, in contact with skin, and if inhaled, and can cause serious eye irritation and respiratory sensitisation.
Is 4-Bromobenzyl isocyanate a controlled substance?
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The provided data does not indicate that 4-Bromobenzyl isocyanate is a controlled substance.
How is 4-Bromobenzyl isocyanate packed, shipped, and exported?
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Tech Serve Solutions expertly packs and ships fine chemicals globally, adhering to all relevant international shipping regulations for hazardous materials. We are experienced exporters.
How can I request a quote or sample for 4-Bromobenzyl isocyanate?
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To request a quote or a sample of 4-Bromobenzyl isocyanate, please use the contact form on our website or call our sales department directly.
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