9279. 3-Thenoic Acid

Nomenclature

CAS number: 88-13-1
3-Thiophenecarboxylic acid; β-thiophenic acid.
C5H4O2S; mol wt 128.15.
C 46.86%, H 3.15%, O 24.97%, S 25.02%.

Description and references

Prepd by the oxidation of 3-thenaldehyde with silver oxide: Campaigne, LeSuer, Org. Synth. 33, 94 (1953).

Chemical structure

Properties

Crystals from water, mp 137-138°. Soly in water at 25°: 0.43 g/100 g. pKa 6.23. Volatile with steam.