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Isoindigotin

(3E)-3-(2-Oxo-1H-Indol-3-Ylidene)-1H-Indol-2-One; 3-(2-Oxoindolin-3-Ylidene)Indolin-2-One; (3E)-3-(2-Oxoindolin-3-Ylidene)Indolin-2-One

C₁₆H₁₀N₂O₂

C1=C4C(=CC=C1)C(=C\3C2=C(C=CC=C2)NC3=O)/C(=O)N4

1S/C16H10N2O2/c19-15-13(9-5-1-3-7-11(9)17-15)14-10-6-2-4-8-12(10)18-16(14)20/h1-8H,(H,17,19)(H,18,20)/b14-13+