thiophen , thiophene n a colourless liquid heterocyclic compound found in the benzene fraction of coal tar and manufactured from butane and sulphur. It has an odour resembling that of benzene and is used as a solvent and in the manufacture of dyes, pharmaceuticals, and resins. Formula: C4H4S
, (Also called)
n another name for →
(C20: from thio- + furan)
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