2-Thiopheneacetic acid

Pharmaceutical Materials 2025-03-02

CAS Number: 1918-77-0

Molecular Formula: C6H6O2S

Molecular Weight: 142.18 g/mol

Appearance: White or slightly yellow crystalline powder Melting Point: 61-67°C

Usage: It is used as an intermediate in the production of cephalosporins and other pharmaceuticals.

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Attribute Details
Chemical Name 2-Thiopheneacetic acid
Synonyms 2-(Thiophen-2-yl)acetic acid; Thiophene-2-acetic acid; 2-Thiophenacetic acid; 2-(2-Thienyl)acetic acid; α-Thiophenylacetic acid; 2-Thiophen-2-ylacetic acid; 2-Thiophene-acetic acid; 2-Thiophenylacetic acid; 2-Thiophene acetic acid; 2-Thiophene-2-acetic acid
CAS Number 532-27-4
EINECS Number 208-537-7
Molecular Formula C6H6O2S
Molecular Weight 142.17 g/mol
Appearance White to off-white crystalline powder
Melting Point 120-123 °C (lit.)
Boiling Point 270.3±23.0 °C (predicted)
Density 1.323 g/cm³ (at 20 °C)
Solubility Soluble in water, ethanol, ether, and acetone
pH Acidic (forms carboxylic acid salts in aqueous solutions)
Stability Stable under normal conditions; incompatible with oxidizing agents and bases
Uses Intermediate in the synthesis of pharmaceuticals, pesticides, and dyes
Used as a starting material for the preparation of heterocyclic compounds and other organic chemicals
Production Method Typically synthesized through the condensation of thiophene with chloroacetic acid or its esters, followed by hydrolysis