CAS: 128-69-8 Molecular Formula: C24H8O6 Molecular Weight (g/mol): 392.32 MDL Number: MFCD00006916 InChI Key: CLYVDMAATCIVBF-UHFFFAOYSA-N Synonym: 3,4,9,10-perylenetetracarboxylic dianhydride,pigment red 224,ptcda,perylene-3,4,9,10-tetracarboxylic dianhydride,perylenetetracarboxylic anhydride,anthra 2,1,9-def:6,5,10-d'e'f' diisochromene-1,3,8,10-tetraone,perylo 3,4-cd:9,10-c'd' dipyran-1,3,8,10-tetrone,perylenetetracarboxylic acid dianhydride,3,4:9,10-perylenetetracarboxylic anhydride PubChem CID: 67191 IUPAC Name: 7,18-dioxaheptacyclo[14.6.2.2²,⁵.0³,¹².0⁴,⁹.0¹³,²³.0²⁰,²⁴]hexacosa-1(22),2(26),3,5(25),9,11,13,15,20,23-decaene-6,8,17,19-tetrone SMILES: O=C1OC(=O)C2=CC=C3C4=CC=C5C(=O)OC(=O)C6=CC=C(C7=CC=C1C2=C37)C4=C56