trans-4-Methoxy-3-buten-2-one
trans-4-Methoxy-3-buten-2-one (CAS 51731-17-0) is a chemical compound with the linear formula CH3OCH=CHCOCH3 and a molecular weight of 100.12 g/mol. This technical grade ketone is an organic building block, primarily utilised in chemical synthesis. It has served as a key starting reagent in the enantioselective total synthesis of complex molecules such as (-)-epibatidine, highlighting its utility in advanced organic chemistry research and development.

Organic Synthesis Reagent
trans-4-Methoxy-3-buten-2-one is employed as a crucial starting material in intricate organic synthesis pathways. Its structure makes it valuable for constructing complex molecular architectures.
Pharmaceutical Intermediate Precursor
This compound has been documented as a starting reagent for the enantioselective total synthesis of natural products and biologically active molecules, such as (-)-epibatidine.
Building Block for Fine Chemicals
As an organic building block, it serves in the preparation of various fine chemicals and advanced intermediates. Its carbonyl functionality and alkene moiety offer versatile reaction possibilities.
| Molecular weight | 100.12 |
|---|---|
| Linear formula | CH3OCH=CHCOCH3 |
| Assay | 90% |
| Grade | technical grade |
| Boiling point | 200 °C(lit.) |
| Density | 0.982 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.468(lit.) |
| Storage temperature | 2-8°C |
| Application | trans-4-Methoxy-3-buten-2-one was used as starting reagent for enantioselective total synthesis of (-)-epibatidine1. |
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 63 °C / 145.4 °F |
| Water hazard class (WGK, DE) | 3 |
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 trans-4-Methoxy-3-buten-2-one used for?
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trans-4-Methoxy-3-buten-2-one is primarily used as a starting reagent in organic synthesis, notably in the enantioselective total synthesis of molecules like (-)-epibatidine. It functions as a valuable building block for fine chemicals.
What is the CAS number and chemical formula for trans-4-Methoxy-3-buten-2-one?
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The CAS number is 51731-17-0, and its linear chemical formula is CH3OCH=CHCOCH3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies trans-4-Methoxy-3-buten-2-one at a technical grade with an assay of 90%. We do not represent this product as USP, BP, or EP grade.
How should trans-4-Methoxy-3-buten-2-one be handled safely?
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Handling requires appropriate personal protective equipment, including eyeshields and gloves. Respiratory protection such as a multi-purpose combination respirator cartridge or a type ABEK respirator filter is recommended. The flash point is 63 °C (145.4 °F), indicating it is combustible.
How is trans-4-Methoxy-3-buten-2-one packed, shipped, and exported?
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Products are packed according to industry standards to ensure safe transit. Tech Serve Solutions is a global supplier and exporter, capable of shipping to numerous international destinations.
How can I request a quote or sample for trans-4-Methoxy-3-buten-2-one?
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To request a quote or sample, please contact our sales team through the website or by phone. Please specify the quantity and your delivery location.
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