5-Ethyl-2-thiophenecarboxaldehyde
5-Ethyl-2-thiophenecarboxaldehyde (CAS: 36880-33-8) is an organic compound with the formula C7H8OS and a molecular weight of 140.20 g/mol. This thiophene derivative functions as a valuable building block in organic synthesis. Its aldehyde functionality and thiophene ring make it useful in the preparation of more complex molecules, particularly within pharmaceutical and materials science research.

Organic Synthesis Intermediate
Utilised as a key intermediate in the synthesis of various organic compounds. Its reactive aldehyde group readily participates in condensation, addition, and oxidation reactions.
Heterocyclic Chemistry
Serves as a versatile building block for constructing more elaborate heterocyclic systems. The thiophene core is a common motif in many biologically active molecules and functional materials.
Pharmaceutical Research
A potential precursor for novel drug candidates. Thiophene-containing compounds have demonstrated a wide range of pharmacological activities, making this aldehyde a target for medicinal chemistry exploration.
| Molecular weight | 140.20 |
|---|---|
| Empirical formula | C7H8OS |
| Assay | 98% |
| Boiling point | 65 °C/2 mmHg(lit.) |
| Density | 1.12 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.57(lit.) |
| Protective equipment | Eyeshields, Gloves |
|---|---|
| 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 5-Ethyl-2-thiophenecarboxaldehyde used for?
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5-Ethyl-2-thiophenecarboxaldehyde is primarily used as an intermediate and building block in organic synthesis, particularly in the fields of heterocyclic chemistry and pharmaceutical research for the development of new compounds.
What is the CAS number and chemical formula for 5-Ethyl-2-thiophenecarboxaldehyde?
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The CAS number is 36880-33-8 and the chemical formula is C7H8OS.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5-Ethyl-2-thiophenecarboxaldehyde with a minimum assay of 98%. This product is not classified as USP, BP, or EP grade. TSS does not represent this chemical as suitable for pharmaceutical, food, or nutraceutical use.
What are the safety and handling recommendations for 5-Ethyl-2-thiophenecarboxaldehyde?
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This compound requires appropriate handling to minimise exposure. Recommended personal protective equipment includes eyeshields and gloves. It is classified under WGK Germany 3. Consult the Safety Data Sheet (SDS) for comprehensive hazard information and handling procedures.
How is 5-Ethyl-2-thiophenecarboxaldehyde packed and shipped?
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Tech Serve Solutions packs and exports fine chemicals like 5-Ethyl-2-thiophenecarboxaldehyde according to international shipping regulations, ensuring safe transit to our global customers.
How can I request a sample or quote for 5-Ethyl-2-thiophenecarboxaldehyde?
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To request a sample or obtain a quotation for 5-Ethyl-2-thiophenecarboxaldehyde, please contact our sales department via the website or your dedicated account manager.
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