4-Methoxyphenethyl isocyanate
4-Methoxyphenethyl isocyanate (CAS: 52634-59-0), with the molecular formula C10H11NO2 and a molecular weight of 177.20 g/mol, is an organic building block. This compound is primarily utilised in chemical synthesis, particularly within research and development laboratories. Its isocyanate functional group makes it a reactive intermediate for creating more complex molecules, serving as a valuable reagent in organic chemistry applications.
- IUPAC
- 1-(2-Isocyanatoethyl)-4-methoxybenzene,2-(4-Methoxyphenyl)ethyl isocyanate
- Synonyms
- 2-(4-Methoxyphenyl)ethyl isocyanate1-(2-Isocyanatoethyl)-4-methoxybenzene

Organic Synthesis Intermediate
As an isocyanate, 4-Methoxyphenethyl isocyanate serves as a key intermediate in the synthesis of various organic compounds. It readily reacts with nucleophiles such as alcohols, amines, and water to form carbamates, ureas, and other derivatives, enabling the construction of complex molecular architectures.
Building Block for Specialty Chemicals
This compound acts as a versatile building block in the development of specialty chemicals. Its structure allows for the introduction of the 4-methoxyphenethyl moiety into target molecules, which can be useful in the design of pharmaceuticals, agrochemicals, or materials science applications.
Reagent in Chemical Research
Researchers utilise 4-Methoxyphenethyl isocyanate in laboratory settings for exploratory synthesis and methodology development. Its defined reactivity profile makes it a predictable reagent for generating novel compounds and exploring new synthetic pathways.
| Molecular weight | 177.20 |
|---|---|
| Linear formula | H3COC6H4CH2CH2NCO |
| Boiling point | 279-280 °C(lit.) |
| Density | 1.105 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.5280(lit.) |


Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H315Causes skin irritation
- 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 | 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) | 20/21/22-36/37/38-42 |
| Safety statements (S) | 23-26-36 |
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 4-Methoxyphenethyl isocyanate used for?
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4-Methoxyphenethyl isocyanate is used as a building block and intermediate in organic synthesis and chemical research. Its isocyanate group allows for reactions to create derivatives like carbamates and ureas.
What is the CAS number and molecular formula for 4-Methoxyphenethyl isocyanate?
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The CAS number is 52634-59-0 and the molecular formula is C10H11NO2 (H3COC6H4CH2CH2NCO).
What grade and purity does Tech Serve Solutions supply for 4-Methoxyphenethyl isocyanate?
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Tech Serve Solutions supplies 4-Methoxyphenethyl isocyanate typically as a technical or research grade material. Purity is available as specified by the product's technical data sheet. TSS does not represent this product as USP, BP, EP, or other pharmacopoeia grades unless explicitly stated.
How should 4-Methoxyphenethyl isocyanate be handled safely?
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4-Methoxyphenethyl isocyanate is a dangerous substance. It can cause respiratory irritation and allergic reactions in the skin and respiratory tract. It is harmful if swallowed, inhaled, or in contact with skin, and causes skin and serious eye irritation. Always use appropriate personal protective equipment, including eyeshields, gloves, and a full-face respirator or suitable combination respirator cartridge (e.g., ABEK type), and work in a well-ventilated area, preferably a fume hood. Refer to the Safety Data Sheet (SDS) for detailed handling and emergency procedures.
Is 4-Methoxyphenethyl isocyanate a controlled substance?
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The provided data does not indicate that 4-Methoxyphenethyl isocyanate is a scheduled or controlled substance.
How is 4-Methoxyphenethyl isocyanate packed and shipped?
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4-Methoxyphenethyl isocyanate is carefully packed in compliance with international shipping regulations for hazardous chemicals. TSS exports globally; please contact us for specific shipping and handling details for your region.
How can I request a sample or quote for 4-Methoxyphenethyl isocyanate?
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To request a sample or a quotation for 4-Methoxyphenethyl isocyanate, please visit the Tech Serve Solutions website and use the contact form or call our sales department. Please provide your contact details and the quantity required.
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