1,4,5, 8-Naphthalenetetracarboxylic 1,8:4,5-dianhydride 1,4,5, 8-Naphthalenetetracarboxylic acid anhydride 1,4,5, 8-Naphthalenetetracarboxylic acid dianhydride 1,4,5, 8-Naphthalenetetracarboxylic dianhydride 1,8:4, 5-Naphthalenetetracarboxylic dianhydride 2,7-Dioxapyrene-1,3,6, 8-tetrone 81-30-1 AIDS-125787 AIDS125787 Isochromeno[6,5,4-def]isochromene-1,3,6,8-tetrone NSC84241 Naphthalenetetracarboxylic dianhydride {[2]Benzopyrano[6,5,4-def][2]benzopyran-1,3,6,8-tetrone}