Ethyl 4-isocyanatobutyrate
Ethyl 4-isocyanatobutyrate (CAS: 106508-62-7), with the linear formula OCN(CH2)3CO2C2H5 and a molecular weight of 157.17 g/mol, is a versatile organic building block. This compound serves as a valuable intermediate in chemical synthesis, particularly within the field of organic chemistry. Its isocyanate functional group allows for a range of reactions, making it useful for constructing more complex molecular structures.

Chemical Synthesis Intermediate
Utilised as a key building block in organic synthesis, enabling the formation of diverse chemical entities. Its isocyanate moiety readily reacts with nucleophiles, facilitating the creation of new bonds and functional groups.
Research and Development
Employed in research laboratories for the exploration of novel chemical pathways and the development of new materials or compounds. Its reactivity makes it a useful reagent for various synthetic strategies.
Pharmaceutical Intermediate Synthesis
A potential intermediate in the multi-step synthesis of pharmaceutical agents, where precise functional group manipulation is required. It can be incorporated into molecular scaffolds relevant to drug discovery.
| Molecular weight | 157.17 |
|---|---|
| Linear formula | OCN(CH2)3CO2C2H5 |
| Assay | 97% |
| Boiling point | 214 °C(lit.) |
| Density | 1.065 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.434(lit.) |

Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H315Causes skin irritation
- H319Causes serious eye irritation
- H332Harmful 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
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 104 °C / 219.2 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22-36/37/38 |
| 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 Ethyl 4-isocyanatobutyrate used for?
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Ethyl 4-isocyanatobutyrate is primarily used as a versatile building block and intermediate in chemical synthesis, particularly in organic chemistry and potentially in the development of pharmaceutical agents. It is also employed in research and development settings.
What is the CAS number and chemical formula for Ethyl 4-isocyanatobutyrate?
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The CAS number for Ethyl 4-isocyanatobutyrate is 106508-62-7, and its linear chemical formula is OCN(CH2)3CO2C2H5.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Ethyl 4-isocyanatobutyrate with an assay of 97%. This product is supplied for research and chemical synthesis purposes and is not represented as USP, BP, EP, or any other pharmacopoeia grade.
How should Ethyl 4-isocyanatobutyrate be handled safely?
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Ethyl 4-isocyanatobutyrate is classified as a Warning substance. It is harmful if swallowed, in contact with skin, or if inhaled, and causes skin and serious eye irritation, and may cause respiratory irritation (H302, H312, H315, H319, H332, H335). Appropriate personal protective equipment, including eyeshields, face shields, gloves, and suitable respiratory protection, must be used during handling. Ensure good ventilation and avoid breathing dust/fume/gas/mist/vapours/spray. In case of contact, follow the precautionary statements (P261-P280-P305 + P351 + P338).
Is Ethyl 4-isocyanatobutyrate a controlled substance?
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The provided data does not indicate that Ethyl 4-isocyanatobutyrate is a controlled substance.
How is Ethyl 4-isocyanatobutyrate packed and shipped?
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Tech Serve Solutions exports fine chemicals globally. Specific packing and shipping details for Ethyl 4-isocyanatobutyrate will be provided upon request, adhering to all relevant international shipping regulations for chemical products.
How can I request a sample or quote for Ethyl 4-isocyanatobutyrate?
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To request a sample or a quote for Ethyl 4-isocyanatobutyrate, please use the contact form on our website or reach out to our sales team directly. Provide your contact details and the quantity required.
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