4-chloro-1-(thiophen-2-yl)butan-1-one
Also known as: gamma-chloro-2-butyrothienone, 4-chloro-2'-butyrothienone, 4-chloro-1-(2-thienyl)-1-butanone, 3-chloropropyl 2-thienyl ketone, 4-chlorobutyrothiophene, 4-chloro-1-thiophen-2-ylbutan-1-one, 4-Chloro-1-(2-thienyl)butanone
4-chloro-1-(thiophen-2-yl)butan-1-one (CAS 43076-59-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H9ClOS and a molecular weight of 188.67400 g/mol. Key properties include a boiling point of 313.6ºC at 760 mmHg, a density of 1.16 and a flash point of 110ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 43076-59-1
- Jingsj CID
- J-38538-6
- Molecular Formula
- C8H9ClOS
- Molecular Weight
- 188.67400 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 313.6ºC at 760 mmHg |
|---|---|
| Density | 1.16 |
| Flash Point | 110ºC |
| Exact Mass | 188.00600 |
| PSA | 45.31000 |
| LogP | 2.94980 |
| Refractive Index | n20/D 1.565(lit.) |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4-chloro-1-(thiophen-2-yl)butan-1-one?
The CAS number of 4-chloro-1-(thiophen-2-yl)butan-1-one is 43076-59-1.
What are the molecular formula and molecular weight of 4-chloro-1-(thiophen-2-yl)butan-1-one?
4-chloro-1-(thiophen-2-yl)butan-1-one has molecular formula C8H9ClOS and molecular weight 188.67400 g/mol.
Is 4-chloro-1-(thiophen-2-yl)butan-1-one hazardous?
4-chloro-1-(thiophen-2-yl)butan-1-one has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 4-chloro-1-(thiophen-2-yl)butan-1-one?
For 4-chloro-1-(thiophen-2-yl)butan-1-one, Upstream Products: 2-Thienylmagnesium bromide, 4-Chlorobutyryl chloride; Downstream Products: Cyclopropyl 2-thienyl ketone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-chloro-1-(thiophen-2-yl)butan-1-one (CAS 43076-59-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-38538-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.