indophenin

noun

in·​do·​phe·​nin

ˌindəˈfēnə̇n,

ə̇nˈdäfənə̇n

: a blue crystalline compound C₂₄H₁₄N₂O₂S₂ formed by reaction of thiophene with isatin and sulfuric acid and used as a color test for the presence of thiophene in technical benzene

Word History

Etymology

International Scientific Vocabulary ind- entry 2 + phene + -in; from a belief that it was a derivative of benzene; originally formed in German

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