Thiophene-3,4-dicarboxylic acid

3,4-噻吩二羧酸

Also known as: 3,4-Dicarboxythiophene, 3,4-Thiophenedicarboxylic acid, THIOPHENE-3,4-DICARBOXYLIC ACID, Thiophene-3,4-Dicarboxylic Acid, 3,4-Thiophenedicarboxylate, NSC 672208, NSC 81793, MFCD00067079

CAS No.
4282-29-5
Jingsj CID
J-1523779-4
Molecular Formula
C6H4O4S
Chinese Name
3,4-噻吩二羧酸
Molecular Weight
172.159 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point227-231ºC
Boiling Point405.9±30.0 °C at 760 mmHg
Density1.7±0.1 g/cm3
Flash Point199.3±24.6 °C

Frequently Asked Questions

What is the CAS number of Thiophene-3,4-dicarboxylic acid?

4282-29-5

What are the molecular formula and molecular weight of Thiophene-3,4-dicarboxylic acid?

C6H4O4S, molecular weight 172.159 g/mol

Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026