5-Methyl-2-thiophenecarboxylic acid

5-甲基-2-噻吩甲酸

Also known as: 5-Methylthiophene-2-carboxylic acid, 5-Methyl-2-thenoic acid, 2-Carboxy-5-methylthiophene, 2-Methyl-5-thiophenecarboxylic acid, 2-Thiophenecarboxylic acid, 5-methyl-, 5-methylthiophene-2-carboxylic acid

CAS No.
1918-79-2
Jingsj CID
J-33269-3
Molecular Formula
C6H6O2S
Chinese Name
5-甲基-2-噻吩甲酸
Molecular Weight
142.176 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point135-138 °C(lit.)
Boiling Point274.7±20.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point120.0±21.8 °C

Frequently Asked Questions

What is the CAS number of 5-Methyl-2-thiophenecarboxylic acid?

1918-79-2

What are the molecular formula and molecular weight of 5-Methyl-2-thiophenecarboxylic acid?

C6H6O2S, molecular weight 142.176 g/mol

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