The Vat Violet 13, with CAS registry number 4424-87-7, has the systematic name of benzo[1,2-c:4,5-c']diacridine-6,9,15,18(5H,14H)-tetrone. Besides this, it is also called Nihonthrene Violet BN. And the chemical formula of this chemical is C₂₈H₁₄N₂O₄. What's more, its EINECS is 224-600-9.

Physical properties of Vat Violet 13: (1)ACD/LogP: 4.10; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 4.09; (4)ACD/LogD (pH 7.4): 4.09; (5)ACD/BCF (pH 5.5): 762.25; (6)ACD/BCF (pH 7.4): 762.25; (7)ACD/KOC (pH 5.5): 4023.54; (8)ACD/KOC (pH 7.4): 4023.54; (9)#H bond acceptors: 6; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 74.76 Å²; (13)Index of Refraction: 1.746; (14)Molar Refractivity: 120.71 cm³; (15)Molar Volume: 297.4 cm³; (16)Polarizability: 47.85×10^-24cm³; (17)Surface Tension: 69.8 dyne/cm; (18)Enthalpy of Vaporization: 113.18 kJ/mol; (19)Vapour Pressure: 4E-24 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C4c7ccccc7Nc3c2C(=O)c1ccc6c(c1C(=O)c2ccc34)Nc5ccccc5C6=O
(2)InChI: InChI=1/C28H14N2O4/c31-25-13-5-1-3-7-19(13)29-23-17(25)11-9-15-21(23)27(33)16-10-12-18-24(22(16)28(15)34)30-20-8-4-2-6-14(20)26(18)32/h1-12H,(H,29,31)(H,30,32)
(3)InChIKey: KLCBMAACUWYFIZ-UHFFFAOYAZ
(4)Std. InChI: InChI=1S/C28H14N2O4/c31-25-13-5-1-3-7-19(13)29-23-17(25)11-9-15-21(23)27(33)16-10-12-18-24(22(16)28(15)34)30-20-8-4-2-6-14(20)26(18)32/h1-12H,(H,29,31)(H,30,32)
(5)Std. InChIKey: KLCBMAACUWYFIZ-UHFFFAOYSA-N