S-Ethyl acetothioacetate
S-Ethyl acetothioacetate (CAS: 3075-23-8), with the molecular formula C6H10O2S and a molecular weight of 146.21 g/mol, is a sulfur-containing organic compound. It serves as a versatile building block in chemical synthesis, particularly for introducing thioester functionalities. This compound finds application in the creation of various organic molecules and as a reagent in synthetic organic chemistry research and development.
- IUPAC
- 3-Oxobutanethioic acid S-ethyl ester

Organic Synthesis Intermediate
Utilised as a key intermediate in the synthesis of complex organic molecules. Its thioester group allows for specific chemical transformations and the introduction of sulfur into target compounds.
Building Block for Heterocycles
Acts as a valuable building block in the construction of heterocyclic compounds, which are prevalent in pharmaceuticals and agrochemicals.
Reagent in Organic Chemistry
Employed as a reagent in various organic reactions for the development of novel chemical entities and materials. Its reactivity is leveraged in diverse synthetic pathways.
| Molecular weight | 146.21 |
|---|---|
| Empirical formula | C6H10O2S |
| Assay | 90% |
| Density | 1.092 g/mL at 25 °C |
| Refractive index | n20/D 1.495 |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Flash point | 80 °C / 176 °F |
|---|---|
| Transport (UN / ADR) | UN 3334 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/37/38 |
| Safety statements (S) | 26 |
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 S-Ethyl acetothioacetate used for?
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S-Ethyl acetothioacetate is primarily used as an intermediate and building block in organic synthesis for creating complex molecules and heterocyclic compounds.
What are the CAS number and formula for S-Ethyl acetothioacetate?
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The CAS number is 3075-23-8 and the molecular formula is C6H10O2S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies S-Ethyl acetothioacetate with a minimum assay of 90%. This product is not represented as USP, BP, EP, or other pharmacopoeia grades.
What are the safety considerations when handling S-Ethyl acetothioacetate?
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S-Ethyl acetothioacetate is classified with a Warning signal word and has hazard statements including H302 (Harmful if swallowed), H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Handle with appropriate personal protective equipment in a well-ventilated area.
How is S-Ethyl acetothioacetate packed, shipped, and exported?
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As a global supplier, Tech Serve Solutions offers S-Ethyl acetothioacetate for export. Packaging adheres to international shipping regulations for chemical goods. Please contact us for specific details regarding your region.
How can I request a sample or quote for S-Ethyl acetothioacetate?
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To request a sample or a quotation for S-Ethyl acetothioacetate, please use the contact form on our website or reach out to our sales department directly.
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