4,4,4-Trifluorocrotonic acid
4,4,4-Trifluorocrotonic acid (CAS: 71027-02-6), also known as 4,4,4-Trifluoro-2-butenoic acid, is a fluorinated organic compound with the molecular formula C4H3F3O2 and a molecular weight of 140.06 g/mol. This carboxylic acid serves as a valuable building block in organic synthesis. Its unique trifluoromethyl group imparts specific electronic and lipophilic properties, making it useful in the development of new materials and pharmaceuticals. Tech Serve Solutions offers this compound for research and development purposes.
- IUPAC
- 4,4,4-Trifluoro-2-butenoic acid
- Synonyms
- 71027-02-64,4,4-Trifluoro-2-butenoic acidC4H3F3O2

Organic Synthesis Intermediate
4,4,4-Trifluorocrotonic acid is utilised as a key intermediate in the synthesis of complex organic molecules. Its reactive functional groups allow for diverse chemical transformations.
Fluorinated Building Block
This compound acts as a crucial building block for introducing trifluoromethyl moieties into target molecules. This is particularly relevant in medicinal chemistry and agrochemical research.
Research and Development
It is employed in academic and industrial research settings for the exploration of novel chemical reactions and the development of new chemical entities.
| Molecular weight | 140.06 |
|---|---|
| Empirical formula | C4H3F3O2 |
| Assay | 96% |
| Melting point | 52-55 °C |

Hazard statements
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Flash point | 77 °C / 170.6 °F |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 10-36/37 |
| 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 4,4,4-Trifluorocrotonic acid used for?
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4,4,4-Trifluorocrotonic acid is primarily used as a building block in organic synthesis and for the introduction of trifluoromethyl groups into other molecules, particularly in research and development settings for pharmaceuticals and agrochemicals.
What is the CAS number and formula for 4,4,4-Trifluorocrotonic acid?
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The CAS number is 71027-02-6, and the empirical formula is C4H3F3O2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4,4,4-Trifluorocrotonic acid with an assay of 96%. This is a technical/research grade material, and TSS does not represent it as USP, BP, or EP grade.
How should 4,4,4-Trifluorocrotonic acid be handled safely?
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4,4,4-Trifluorocrotonic acid is classified as a Warning. It may cause serious eye irritation (H319) and respiratory irritation (H335). Handle with appropriate personal protective equipment, ensuring good ventilation and avoiding contact with eyes, skin, and clothing. Refer to the Safety Data Sheet for full handling instructions.
Is 4,4,4-Trifluorocrotonic acid available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 4,4,4-Trifluorocrotonic acid, and can facilitate international orders.
How can I request a quote or sample?
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To request a quote or a sample of 4,4,4-Trifluorocrotonic acid, please visit the Tech Serve Solutions website or contact our sales department directly.
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