Ethyl 2-(4-methoxyphenylcarbonothioylthio)acetate
Ethyl 2-(4-methoxyphenylcarbonothioylthio)acetate (CAS: 129841-40-3), with the molecular formula C12H14O3S2 and a molecular weight of 270.37 g/mol, is a dithiobenzoate compound. It serves as a key Reagent for Controlled Radical Polymerization, specifically acting as a Chain Transfer Agent (CTA) in RAFT polymerisation processes. Its design is particularly effective for the controlled synthesis of polymers derived from methacrylate and methacrylamide monomers.
- IUPAC
- 2-[(4-Methoxyphenylthioxomethyl)thio]ethanoic acid ethyl ester,CTA,RAFT dithiobenzoate

Reagent for Controlled Radical Polymerization
This compound is a dithiobenzoate-based RAFT agent, crucial for techniques like Reversible Addition-Fragmentation chain Transfer (RAFT) polymerization. It enables precise control over polymer chain length, architecture, and dispersity.
Chain Transfer Agent (CTA)
As a CTA, it plays a vital role in regulating polymerisation rates and molecular weights. Its electron-donating group enhances fragmentation, leading to reduced polymerization times for specific monomers.
Methacrylate and Methacrylamide Polymerisation
It is especially suited for the controlled polymerisation of methacrylate and methacrylamide monomers. This allows for the synthesis of advanced polymers with tailored properties for materials science applications.
| Molecular weight | 270.37 |
|---|---|
| Empirical formula | C12H14O3S2 |
| Assay | 99% |
| Storage temperature | 2-8°C |
| Application | RAFT agent for controlled radical polymerization; especially suited for the polymerization of methacrylate and methacrylamide monomers. Chain Transfer Agent (CTA) with electron donating group to increase fragmentation and reduce polymerization time. |
| Melting point | 30-35 °C |
| Flash point | >110 °C / >230 °F |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 43 |
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 2-(4-methoxyphenylcarbonothioylthio)acetate used for?
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Ethyl 2-(4-methoxyphenylcarbonothioylthio)acetate is primarily used as a Reagent for Controlled Radical Polymerization, specifically as a Chain Transfer Agent (CTA) in RAFT polymerisation, particularly for methacrylate and methacrylamide monomers.
What is the CAS number and chemical formula for this product?
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The CAS number is 129841-40-3 and the empirical formula is C12H14O3S2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product with an assay of 99%. It is not represented as USP, BP, EP, or other pharmacopoeial grades.
How should this chemical be handled and stored?
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This compound is classified as an irritant (Xi) and may cause sensitisation by skin contact (R43). It has a flash point above 110 °C. Store at 2-8°C to maintain stability.
Is this product controlled or scheduled?
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The provided data does not indicate that this product is a controlled or scheduled substance.
How can I request a quote or sample?
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Please contact our sales team via the website or direct telephone line to request a quote or a sample of Ethyl 2-(4-methoxyphenylcarbonothioylthio)acetate.
Is this product available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including Ethyl 2-(4-methoxyphenylcarbonothioylthio)acetate.
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