Tetramethyl-1,3-cyclobutanedione
Tetramethyl-1,3-cyclobutanedione (CAS 933-52-8), with the molecular formula (CH3)4C4(=O)2 and a molar mass of 140.18 g/mol, is a specialised organic building block. This cyclic diketone is valuable in chemical synthesis, particularly for its utility in constructing more complex molecules. Its rigid cyclobutane core and reactive carbonyl groups make it a versatile intermediate in organic chemistry research and development.
- Synonyms
- (CH3)4C4(=O)2

Organic Synthesis Intermediate
Serves as a key building block in the synthesis of novel organic compounds. Its structure allows for various chemical transformations, making it useful in developing new materials or complex molecular architectures.
Research and Development
Widely employed in academic and industrial research laboratories for exploring new synthetic pathways and creating diverse chemical libraries. Its unique structural features are of interest for medicinal chemistry and materials science.
Carbonyl Compound Chemistry
As a diketone, it participates in reactions characteristic of carbonyl groups, enabling functional group interconversions and the formation of new C-C or C-heteroatom bonds.
| Molecular weight | 140.18 |
|---|---|
| Linear formula | (CH3)4C4(=O)2 |
| Assay | 99% |
| Boiling point | 95-159 °C/750 mmHg(lit.) |
| Melting point | 114-116 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| 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 Tetramethyl-1,3-cyclobutanedione used for?
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Tetramethyl-1,3-cyclobutanedione is primarily used as a building block in organic synthesis and in research and development for creating complex molecules and exploring new synthetic pathways.
What is the CAS number and formula for Tetramethyl-1,3-cyclobutanedione?
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The CAS number is 933-52-8, and the linear formula is (CH3)4C4(=O)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Tetramethyl-1,3-cyclobutanedione with an assay of 99%. This product is supplied for research and development purposes and is not represented as USP, BP, EP, or other pharmacopoeial grades.
How should Tetramethyl-1,3-cyclobutanedione be handled?
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Handling requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. It is classified under WGK Germany 3, indicating it is hazardous to water.
Is Tetramethyl-1,3-cyclobutanedione a controlled substance?
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Based on the provided data, there is no indication that Tetramethyl-1,3-cyclobutanedione (CAS 933-52-8) is a controlled substance.
How is Tetramethyl-1,3-cyclobutanedione packed, shipped, and exported?
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Tech Serve Solutions specialises in the global supply and export of fine chemicals. Specific packaging and shipping details are available upon request, adhering to all relevant regulations for chemical transport.
How can I request a quote or sample for Tetramethyl-1,3-cyclobutanedione?
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To request a quote or sample, please contact our sales team directly through the website or by phone. Our team will be happy to assist you with your requirements.
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