3,4,5-Trimethoxybenzyl isocyanate
3,4,5-Trimethoxybenzyl isocyanate (CAS: 351003-01-5), with the molecular formula (CH3O)3C6H2CH2NCO and a molecular weight of 223.23 g/mol, is a specialised organic compound. It functions as a valuable building block in organic synthesis. This chemical is particularly useful for introducing the 3,4,5-trimethoxybenzyl moiety into various molecular structures, finding utility in the development of complex organic molecules.
- Synonyms
- 351003-01-5, (CH3O)3C6H2CH2NCO

Organic Synthesis Intermediate
3,4,5-Trimethoxybenzyl isocyanate serves as a reactive intermediate in the synthesis of more complex organic molecules. Its isocyanate group readily reacts with nucleophiles, enabling the formation of amides, ureas, and carbamates.
Pharmaceutical Research
This compound can be employed in the exploratory stages of pharmaceutical research and development. It may be used to construct novel chemical entities with potential therapeutic applications, leveraging its specific structural features.
Material Science Applications
The isocyanate functionality allows for potential incorporation into polymer backbones or as a cross-linking agent in specific material science applications, although its primary use remains in fine chemical synthesis.
| Molecular weight | 223.23 |
|---|---|
| Linear formula | (CH3O)3C6H2CH2NCO |
| Assay | 97% |
| Melting point | 84-88 °C(lit.) |


Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H319Causes serious eye irritation
- H332Harmful if inhaled
- H334May cause allergy or asthma symptoms if inhaled
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P342
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22-36/37/38-42 |
| Safety statements (S) | 22-26-36/37 |
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 3,4,5-Trimethoxybenzyl isocyanate used for?
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3,4,5-Trimethoxybenzyl isocyanate is primarily used as a building block and intermediate in organic synthesis, particularly for introducing the 3,4,5-trimethoxybenzyl group into other molecules for applications in pharmaceutical research and the development of complex organic compounds.
What is the CAS number and formula for 3,4,5-Trimethoxybenzyl isocyanate?
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The CAS number for 3,4,5-Trimethoxybenzyl isocyanate is 351003-01-5, and its linear formula is (CH3O)3C6H2CH2NCO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3,4,5-Trimethoxybenzyl isocyanate with an assay of 97%. TSS does not represent this product as USP, BP, or EP grade. For specific purity requirements, please contact our sales team.
How should 3,4,5-Trimethoxybenzyl isocyanate be handled safely?
+
3,4,5-Trimethoxybenzyl isocyanate is a Danger substance (GHS07, GHS08) that is harmful if swallowed, in contact with skin, or if inhaled, and causes skin and eye irritation, respiratory irritation, and allergic skin reactions. Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, face shield, and gloves. Ensure adequate ventilation. Avoid breathing dust/fume/gas/mist/vapours/spray. For detailed safety information, consult the Safety Data Sheet.
How is 3,4,5-Trimethoxybenzyl isocyanate packed, shipped, and exported?
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3,4,5-Trimethoxybenzyl isocyanate is carefully packed according to industry standards to ensure safe transit. Tech Serve Solutions is an experienced global supplier and exporter of fine chemicals, adhering to all relevant shipping and export regulations.
How can I request a sample or quote for 3,4,5-Trimethoxybenzyl isocyanate?
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To request a sample or a quotation for 3,4,5-Trimethoxybenzyl isocyanate, please contact the Tech Serve Solutions sales department via our website or by telephone. Our team will be happy to assist you.
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