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Noun

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phenothiazinium (plural phenothiaziniums)

  1. (organic chemistry, especially in combination) The tricyclic heterocycle that forms the basis of methylene blue and related dyes
    • 2015 July 6, “UV-Stressed Daphnia pulex Increase Fitness through Uptake of Vitamin D 3”, in PLOS ONE[1], →DOI:
      Vitamin D 3 was fluorescently labeled using a phenothiazinium dye and added to cultures of D.