phenazine

A yellow crystalline compound, C₁₂H₈N₂, used in the manufacture of dyes.

A yellow crystalline base, C₁₂H₈N₂, made by heating calcium azobenzoate with slaked lime. It melts at 170–171° C. and dissolves in sulphuric acid with a blood-red color.

any of a class of aromatic tricyclic heterocycles used to make dyestuffs