dicarbocyanine

noun

di·​carbocyanine

"+

variants or dicarbocyanine dye

: any of certain cyanine dyes in whose structure the two heterocyclic rings are joined by a five-carbon chain (as =CH−CH=CH−CH=CH−)

specifically : such a dye containing two quinoline rings

called also pentamethine

Word History

Etymology

di- + carb- + cyanine

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