4-(2-thienyl)-3-buten-2-one
4-(2-噻吩基)-3-丁烯-2-酮
Also known as: 1-(2-thienyl)-1-buten-3-one, 1-(thien-2-yl)but-1-en-3-one, 2-(3-oxo-1-butenyl)thiophene, 2-thienylidenacetone, 4-(2-thienyl)but-3-en-2-one
4-(2-thienyl)-3-buten-2-one (CAS 874-83-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H8OS and a molecular weight of 152.21400 g/mol. It is also known as 1-(2-thienyl)-1-buten-3-one, 1-(thien-2-yl)but-1-en-3-one and 2-(3-oxo-1-butenyl)thiophene. Key properties include a melting point of 25-26 °C(lit.), a boiling point of 86-88 °C (1 mmHg), a density of 1.151 g/mL at 25 °C(lit.) and a flash point of 230 °F. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 874-83-9
- Jingsj CID
- J-37032-5
- Molecular Formula
- C8H8OS
- Chinese Name
- 4-(2-噻吩基)-3-丁烯-2-酮
- Molecular Weight
- 152.21400 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 25-26 °C(lit.) |
|---|---|
| Boiling Point | 86-88 °C (1 mmHg) |
| Density | 1.151 g/mL at 25 °C(lit.) |
| Flash Point | 230 °F |
Frequently Asked Questions
What is the CAS number of 4-(2-thienyl)-3-buten-2-one?
The CAS number of 4-(2-thienyl)-3-buten-2-one is 874-83-9.
What are the molecular formula and molecular weight of 4-(2-thienyl)-3-buten-2-one?
4-(2-thienyl)-3-buten-2-one has molecular formula C8H8OS and molecular weight 152.21400 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-(2-thienyl)-3-buten-2-one (CAS 874-83-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-37032-5 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.