Synonyms: 1,4,5,8-Naphthalenetetracarboxylic1,8:4,5-dianhydride (7CI,8CI);Naphthalenetetracarboxylic dianhydride (6CI);1,4,5,8-Naphthalenetetracarboxylic acid dianhydride;1,8:4,5-Naphthalenetetracarboxylic dianhydride;2,7-Dioxapyrene-1,3,6,8-tetrone;NSC 84241;NTCDA;Naphthalenetetracarboxylicanhydride;Naphthalic 1,8:4,5-dianhydride;