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a dark-blue powder, C16H10N2 O2, with a coppery luster, the coloring matter and chief ingredient in indigo (the dye)
C16H10N2O2 . EKI terminibaas Esterm. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//esterm/C16H10N2O2/1/est (19.06.2026)
