4,5,6,7-Tetrahydrobenzo[c]thiophene-1-carboxylic acid

4,5,6,7-四氢苯并[c]噻吩-1-羧酸

Also known as: 4,5,6,7-Tetrahydro-2-benzothiophene-1-carboxylic acid, 1-Carboxy-4,5,6,7-tetrahydrobenzo[c]thiophene, 1-Carboxy-4,5,6,7-tetrahydro-2-benzothiophene, Benzo[c]thiophene-1-carboxylic acid, 4,5,6,7-tetrahydro-, 2-Carboxy-4,5,6,7-tetrahydrobenzo[c]thiophene, 4,5,6,7-Tetrahydro-1-benzothiophene-3-carboxylic acid (incorrect but sometimes used), NSC 172280, CHEMBRDG-BB 4402365, AKOS006228833, EN300-216829

4,5,6,7-Tetrahydrobenzo[c]thiophene-1-carboxylic acid (CAS 6435-75-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H10O2S and a molecular weight of 182.23900 g/mol. It is also known as 4,5,6,7-Tetrahydro-2-benzothiophene-1-carboxylic acid, 1-Carboxy-4,5,6,7-tetrahydrobenzo[c]thiophene and 1-Carboxy-4,5,6,7-tetrahydro-2-benzothiophene. Key properties include a melting point of 203ºC, a boiling point of 394.5ºC at 760 mmHg, a density of 1.243g/cm3 and a flash point of 155.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
6435-75-2
Jingsj CID
J-1138142-0
Molecular Formula
C9H10O2S
Chinese Name
4,5,6,7-四氢苯并[c]噻吩-1-羧酸
Molecular Weight
182.23900 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point203ºC
Boiling Point394.5ºC at 760 mmHg
Density1.243g/cm3
Flash Point155.5ºC

Frequently Asked Questions

What is the CAS number of 4,5,6,7-Tetrahydrobenzo[c]thiophene-1-carboxylic acid?

The CAS number of 4,5,6,7-Tetrahydrobenzo[c]thiophene-1-carboxylic acid is 6435-75-2.

What are the molecular formula and molecular weight of 4,5,6,7-Tetrahydrobenzo[c]thiophene-1-carboxylic acid?

4,5,6,7-Tetrahydrobenzo[c]thiophene-1-carboxylic acid has molecular formula C9H10O2S and molecular weight 182.23900 g/mol.

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

Last updated:

How to cite: Jingsj. "4,5,6,7-Tetrahydrobenzo[c]thiophene-1-carboxylic acid (CAS 6435-75-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1138142-0 (accessed 2026-10-24).

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