5-Chlorothiophene-2-carbonyl chloride

Also known as: 2-Thiophenecarbonyl chloride, 5-chloro-, 2-Thiophenecarbonyl chloride, 5-chloro- (9CI), 2-Chloro-5-(chlorocarbonyl)thiophene, 2-Chloro-5-(chloroformyl)thiophene, 5-Chloro-2-thenoyl Chloride, 5-Chloro-2-thiophenecarbonyl chloride, 5-Chlorothiophene-2-carbonyl chloride, 97%, 5-CHOROTHIOPHENE-2-ARBONYL CHLORIDE, Rivaroxaban Impurity 82

5-Chlorothiophene-2-carbonyl chloride (CAS 42518-98-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H2Cl2OS and a molecular weight of 181.040 g/mol. Key properties include a melting point of 4 °C, a boiling point of 223.9±20.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 89.2±21.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 42518-98-9
Jingsj CID: J-1402051-0
Molecular Formula: C₅H₂Cl₂OS
Molecular Weight: 181.040 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	4 °C
Boiling Point	223.9±20.0 °C at 760 mmHg
Density	1.5±0.1 g/cm3
Flash Point	89.2±21.8 °C
Exact Mass	179.920334
PSA	45.31000
LogP	2.66
Vapor Pressure	0.1±0.4 mmHg at 25°C
Refractive Index	1.594

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 5-Chlorothiophene-2-carbonyl chloride?

The CAS number of 5-Chlorothiophene-2-carbonyl chloride is 42518-98-9.

What are the molecular formula and molecular weight of 5-Chlorothiophene-2-carbonyl chloride?

5-Chlorothiophene-2-carbonyl chloride has molecular formula C5H2Cl2OS and molecular weight 181.040 g/mol.

What are the upstream and downstream products of 5-Chlorothiophene-2-carbonyl chloride?

For 5-Chlorothiophene-2-carbonyl chloride, Upstream Products: 5-Chloro-2-thiophenecarboxylic acid, Oxalyl chloride, 2-Acetyl-5-chlorothiophene; Downstream Products: Rivaroxaban, 5-Chloro-2-thiophenecarboxylic acid hydrazide, 5-chlorothiophene-2-carboxamide.

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. "5-Chlorothiophene-2-carbonyl chloride (CAS 42518-98-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1402051-0 (accessed 2026-11-09).

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