5-Chloro-3-methyl-1H-benzo[b]thiophene-1,1-dione

5-氯-3-甲基-1H-苯并[b]噻吩-1,1-二酮

Also known as: 5-CHLORO-3-METHYL-1H-1LAMBDA6-BENZO[B]THIOPHENE-1,1-DIONE, 5-CHLORO-3-METHYL-1H-BENZO[B]THIOPHENE-1,1-DIONE, 5-CHLORO-3-METHYLBENZO[B]THIOPHENE-1,1-DIOXIDE, 5-Chloro-3-methyl-1H-1lambda6-thiophene-1,1-dione, 5-chloro-3-methyl-1-benzothiophene 1,1-dioxide, BUTTPARK 46\/04-58, Benzo[b]thiophene, 5-chloro-3-methyl-, 1,1-dioxide

5-Chloro-3-methyl-1H-benzo[b]thiophene-1,1-dione (CAS 17514-66-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H7ClO2S and a molecular weight of 214.66900 g/mol. It is also known as 5-CHLORO-3-METHYL-1H-1LAMBDA6-BENZO[B]THIOPHENE-1,1-DIONE, 5-CHLORO-3-METHYL-1H-BENZO[B]THIOPHENE-1,1-DIONE and 5-CHLORO-3-METHYLBENZO[B]THIOPHENE-1,1-DIOXIDE. Key properties include a melting point of 168ºC, a boiling point of 397.4ºC at 760mmHg, a density of 1.447g/cm3 and a flash point of 194.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
17514-66-8
Jingsj CID
J-41212-0
Molecular Formula
C9H7ClO2S
Chinese Name
5-氯-3-甲基-1H-苯并[b]噻吩-1,1-二酮
Molecular Weight
214.66900 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point168ºC
Boiling Point397.4ºC at 760mmHg
Density1.447g/cm3
Flash Point194.2ºC

Frequently Asked Questions

What is the CAS number of 5-Chloro-3-methyl-1H-benzo[b]thiophene-1,1-dione?

The CAS number of 5-Chloro-3-methyl-1H-benzo[b]thiophene-1,1-dione is 17514-66-8.

What are the molecular formula and molecular weight of 5-Chloro-3-methyl-1H-benzo[b]thiophene-1,1-dione?

5-Chloro-3-methyl-1H-benzo[b]thiophene-1,1-dione has molecular formula C9H7ClO2S and molecular weight 214.66900 g/mol.

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

Last updated:

How to cite: Jingsj. "5-Chloro-3-methyl-1H-benzo[b]thiophene-1,1-dione (CAS 17514-66-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-41212-0 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.