Tetrapyrazinoporphyrazine

Tetrapyrazinoporphyrazine (TPz or TPyzPz), also known as azaphthalocyanine (AzaPc), is a planar, aromatic, macrocyclic, organic compound that is viewed as an aza-analogue of phthalocyanine (Pc). It was first discovered and reported in 1937 by R. P. Linstead, the scientist who was able to configure the structures of porphyrazines and phthalocyanines as well.

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