1-(5-Chlorothiophen-2-yl)butan-1-one

Also known as: 1-(5-Chloro-2-thienyl)-1-butanone, 1-(5-Chloro-2-thienyl)butan-1-one, 1-(5-Chlorothien-2-yl)butan-1-one, 1-(5-Chloro-[2]thienyl)-butan-1-one, 5-Chloro-2-butyrylthiophene, 1-Butanone, 1-(5-chloro-2-thienyl)-

1-(5-Chlorothiophen-2-yl)butan-1-one (CAS 32427-77-3) 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 285.5ºC at 760 mmHg, a density of 1.214g/cm3 and a flash point of 126.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 32427-77-3
Jingsj CID: J-1340130-4
Molecular Formula: C₈H₉ClOS
Molecular Weight: 188.67400 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	285.5ºC at 760 mmHg
Density	1.214g/cm3
Flash Point	126.5ºC
Exact Mass	188.00600
PSA	45.31000
LogP	3.38430
Refractive Index	1.54
Storage Conditions	2-8°C

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 1-(5-Chlorothiophen-2-yl)butan-1-one?

The CAS number of 1-(5-Chlorothiophen-2-yl)butan-1-one is 32427-77-3.

What are the molecular formula and molecular weight of 1-(5-Chlorothiophen-2-yl)butan-1-one?

1-(5-Chlorothiophen-2-yl)butan-1-one has molecular formula C8H9ClOS and molecular weight 188.67400 g/mol.

What are the upstream and downstream products of 1-(5-Chlorothiophen-2-yl)butan-1-one?

For 1-(5-Chlorothiophen-2-yl)butan-1-one, Upstream Products: 2-Chlorothiophene, Butyric anhydride, Butyryl chloride.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1-(5-Chlorothiophen-2-yl)butan-1-one (CAS 32427-77-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1340130-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.