吩嗪（C₁₂H₈N₂或C₆H₄N₂C₆H₄），又称夹二氮（杂）蒽、二苯并吡嗪是一种二苯并环状的吡嗪，也是许多染料的原料，例如二氨吖嗪、中性红、对氮蒽蓝和番红精等。

 本条目出自已经处于公有领域的：Chisholm, Hugh (编). 大英百科全书 第十一版. 剑桥大学出版社. 1911年. 

Phenazine (C₁₂H₈N₂ or C₆H₄N₂C₆H₄), also called azophenylene, dibenzo-p-diazine, dibenzopyrazine, and acridizine, is a dibenzo annulated pyrazine and the parent substance of many dyestuffs, such as the toluylene red, **** and safranines (and the closely related eurhodines). Phenazine crystallizes in yellow needles, which are only sparingly soluble in alcohol. Sulfuric acid dissolves it, forming a deep-red solution.